Filterbuy Afb1725x3525x4m11apk2

30" H x 24" W x 1" D

Air-Care electrostatic air filters are 10 times more efficient than the standard disposable filter. By switching to a permanent electrostatic furnace filter, the air inside your home will be cleaner and fresher. Our furnace filters are electrostatically charged to trap up to 88% of the dust and allergens in your home. Just easily wash the filter every 1-3 months and put it back in place. The sturdy metal frame will stand the test of time. With a lifetime warranty, why not make the switch to a permanent air filter? Electrostatic Air Filters clean the air by using static electricity, a safe, naturally occurring phenomenon. An electrostatic charge is generated by air flowing through a maze of static-prone fibers. Airborne particles are attracted and held by the static charge until released by washing. All Air-Care Electrostatic Air Filters contain an EPA-registered anti-microbial material to inhibit mold and bacteria growth on the air filter surface. electrostatic air filters the air you breathe and contains many irritants such as pollen, dust, bacteria, mold spores, pet dander, and smoke. Most of these particles are smaller than one micron. Our Electrostatic Air Filters are an effective and efficient way to reduce the number of these particles in your air. This illustration shows the typical dust-loading pattern of the electrostatic fibers. This unique characteristic improves air flow while providing maximum filtration.

My first purchase!!! I’m impressed with the service given me!!! Looking forward to future purchases with “ Way Fair “. Jerome. Tamarac, FL. Mon Jun 08 2026

Keep your LG tower-style air purifier in perfect working order with LG replacement filters. The AAFTWT130 replacement filter pack includes one PuriCare micro-particle filter and one deodorizing activated carbon filter (filter cases are not included). LG's filtration system works together to clean the air, capturing dust and other airborne particles.

Ordered my replacement filter for my LG air purifier and now it works like new! Great seller with Wayfair! High quality product at a great price!. Anonymous. Sun Mar 30 2025

Breathe in the fresh air your home deserves with the Soleus Air Whole House Air Purifier’s 4-stage True HEPA filtration system that sucks dust, pet dander, and allergens right out of the air. With a noise level of just 33 dB, the Soleus Air Whole House Air Purifier provides purified air at the volume of a whisper. With Alexa compatibility, you can change between the unit’s settings from anywhere in the house. A high CADR rating means this powerful air purifier delivers coverage to large-sized rooms up to 980ft2. Combining all these features with a laser that continuously measures air quality and automatically adjusts the unit’s settings makes the Soleus Air Whole House Air Purifier the ultimate solution for purified air throughout the home.

Justin. Palm Coast, FL. Tue Jan 14 2025

24" H x 20" W x 1" D

Filter is a quality sturdy product. However, I wish my AC was labeled properly with correct filter size needed. Ordered size as the AC was labeled but filters were a little bigger than necessary.. Marlo. Hillsborough, CA. Wed Sep 17 2014

25" H x 16" W x 1" D

These are my favorite filters! I’m so happy Wayfair carries them. Shipping was lightening fast!. Tharin. Fayetteville, PA. Tue Jul 08 2025

25" H x 25" W x 1" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated air filter can be used in AC and furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 test standard while maintaining low pressure drop and long service life. Glasfloss Z-line series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded, and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

Please to have found the filters at a reasonable of price.. Naurmey. Baton Rouge, LA. Wed Jan 14 2026

The Clorox Tabletop True HEPA Replacement Filter captures 99.97% of allergens and particulates & reduces viruses and bacteria so you can breathe easier. Fits Clorox Tabletop Air Purifier models # 11020 and # 11021.

Good product and filter lasts a long time!. Paula. VA. Sat Jun 06 2026

24" H x 24" W x 1" D

Fit is hard to find the right size filters for our furnace....so grateful you had them.. Kathryn. MO. Wed Sep 30 2020

20" H x 20" W x 1" D

It really works massive dust reduction. Talia Marie. Chandler, AZ. Wed Sep 04 2019

Get Simply Clean Air and keep your BISSELL air180 air purifier running its best buy replacing the filters every 6 months with genuine BISSELL replacement filters. Keeping up with filter maintenance means your home air purifier can keep capturing pet dander, pollen, dust, odors, and VOCs from your indoor air. The HEPA filter captures at least 99.97% of particles 0.3 microns and smaller, so you can breathe easier. BISSELL proudly supports BISSELL Pet Foundation and its mission to help save homeless pets. When you buy a BISSELL product, like this replacement filter, you help save pets, too. We're proud to design products that help make pet messes, odors and pet homelessness disappear.

I purchased this for my air purifier. It is made of very durable material. Thank you Wayfair’s.. Ellen. Lumber Bridge, NC. Thu Jan 08 2026

Been using the 20x25x4 for multiple years now. Filters work great, I replace mine every 90 days in my house. Never had any issues or concerns about quality or construction of the filters. I've seen many complaints about the 1" thick filters and while I understand their concerns; a 1" thick filter is old technology and should consider getting a larger filter box. I find the complaints about the tabs holding the pleats in the filter where you may have to push a few back trivial. You're buying a MERV 11 equivalent disposable filter, again DISPOSABLE. It wasn't long ago when everyone was just using the blue fiberglass air filters.. There is a balance between retail cost and manufacturing cost. If they raised prices to appease everyone, they'd complain the filters are too expensive even though build quality is excellent!. Your Neighbor. Indiana. Wed Dec 21 2022

12.2" H x 8.7" W x 8.7" D

Breathe clean, fresh air with the Genuine Shark Clean Sense HEPA Replacement Filter, engineered for high-efficiency filtration. This advanced 3-stage filter system captures 99.98% of allergens and microscopic pollutants as small as 0.1 microns (based on IEST-RP-CC007 standards). Featuring Anti-Allergen technology, this multi-layered filter is designed to reduce airborne irritants, while an odor guard helps combat household odors and VOCs for a fresh home. For optimal performance, replace your filter every 6 to 12 months and enjoy purified air with Shark’s trusted filtration technology.

Perfect OM filter replacement! Easy switchout and glad I did because the old one was dirty!!. Stacy. New Orleans, LA. Fri Feb 13 2026

Dual 360° air intakes and Turbo Pet Mode deliver powerful, rapid purification for large spaces up to 1295 sq. ft. Real-time air quality monitoring, auto adjustment, and ultra-quiet 20dB sleep mode ensure fresh, clean air with effortless operation—ideal for homes with pets or light sleepers.

Fast delivery, turbo is kinda loud have it on low and on auto because air quality is very good right now have allergies really bad and cats with their fur so we will see how things go.. Deborah. US. Thu Mar 12 2026

24" H x 18" W x 2" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated air filter can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 test standard while maintaining low-pressure drop and long service life. Glasfloss Z-line series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded, and manufactured in an engineered gradient structure. The thermally-bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

Great price on a quality product. These are recommended by OEM. Very happy with purchase.. David. Wed Dec 25 2024

20 x 25 x 4 Furnace Filter, MERV 11 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters, 4-Pack (Actual Size: 20.47 x 25.20 x 3.98 Inch) for Capturing Dust, Smog, Pet Dander High-Efficiency Purification Multi-Layer Filtration Superior Compatibility Stable and Durable Wide Application Long-Lasting Performance Folded Item Dimensions(LxWxH): 25.20 x 3.98 x 4.33 in / 640 x 101 x 110 mm,Nominal Dimensions: 20 x 25 x 4 in,Filtration Grade: MERV 11,Plastic Body with Screws Width: 3.98 in / 101 mm,Number of Pieces: 4,Expanded Height: 20.47 in / 520 mm,Item Model Number: SEN-06,Item Length: 25.20 in / 640 mm,Plastic Body Width: 3.82 in / 97 mm,Net Weight: 14.11 lbs / 6.4 kg,Expanded Item Dimensions(LxWxH): 25.20 x 3.98 x 20.47 in / 640 x 101 x 520 mm

AirDoctor 2000 provides powerful purification for small rooms, medium/small bedrooms, nurseries, and home offices. It circulates the air in 305 sq. ft. 4x/hour or in 610 sq. ft. 2x/hour.

Exactly as described and looks just like pictures. Shipping was reasonable and fairly quick. Air Doctor is energy efficient and gets a decent size room purified. Reputable and reliable products. Enjoy Wayfair shopping!. Elvera. Springvale, ME. Sat Feb 07 2026

20" H x 25" W x 4" D

Furnace Filter, MERV 16 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters, 2-Pack for Capturing Dust, Smog, Pet Dander High-Efficiency Purification Multi-Layer Filtration Superior Compatibility Stable and Durable Wide Application Long-Lasting Performance Folded Item ,Nominal Filtration Grade: MERV 16,Plastic Body with Screws Width: 3.98 in / 101 mm,Number of Pieces: 2

The Winix 1712-0123-00 Replacement Filter Q is a complete one year filter set. The Winix True HEPA Filter Captures 99.99%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.01 microns. The AOC Carbon Filter reduces VOCs and household odors from cooking, pets, and smoke. It is designed to catch airborne particles found indoors, which also helps prolong the True HEPA Filter life. The genuine Winix Filter Q is compatible with Winix Air Purifier unit 5510 and 5520

I'm in my second purchase of this filter set and yes it fits my 5510 perfectly! So thankful I found this listing. My bedroom has lost the stale musty smell and I never want to go back.. Danish. AZ. Thu Jan 29 2026

25" H x 20" W X 4" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated air filter can be used in AC and furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 test standard while maintaining low-pressure drop and long service life. Glasfloss Z-line series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded, and manufactured in an engineered gradient structure. The thermally-bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

25" H x 20" W x 2" D

For allergen filtration performance, the Glasfloss ZL MERV 11 pleated air filter can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 11 filter features the latest in media technology to achieve a MERV 11 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 11 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

Say goodbye to stale air and hello to pure, refreshing breaths with our advanced 3-stage H13 HEPA air purifier! Designed for homes, offices, and bedrooms, it removes 99.97% of dust, Air Purifiers for Home Covers Up to 2600 Ft²,smoke, pollen, pet dander, and odors, capturing particles as tiny as 0.3 microns—so you and your loved ones breathe cleaner, healthier air every day.

works great in my house for dust. Lori. Bloomingdale, OH. Sat Jun 06 2026

Ivation Replacement Activated Carbon Filter for IVADGOZHEPA Ivation 5-in-1 HEPA Air Purifier & Ozone Generator W/Digital Display Timer and Remote, Ionizer & Deodorizer 3,700 Sq/Ft

This is such an awesome replacement find!. Raymond. Palm Bay, FL. Thu Mar 12 2026

The Clorox large room air purifier captures 99.97% of allergens and particulates* and 99.9% of viruses and bacteria** so you can breathe easier. The 3-stage 360° filter captures particulates in 3 filter layers and includes a True HEPA filter.

I had some trouble with the filter for the first couple of days but it seems to have straightened itself out. Quiet and works well.. Kyle. Springfield, IL. Sun Jun 07 2026

25" H x 56" W x 5" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated air filter Trion replacements can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

AIRDOCTOR AD1000 Genuine Replacement Filter Set | Captures Ultra-Fine Airborne Contaminants | Reduces Toxic Gasses (VOC's) | MADE BY AIRDOCTOR

I have this air doctor in my daughter's room and the bigger one in our living space. I love knowing we are breathing cleaner air!! We have very little dust on our surfaces - these are amazing!!. Brooke P.. Sat Mar 07 2026

Easy Replacement Filter Set For OVAL AIR HEPA Air Purifiers. Use genuine OVAL AIR replacement filters to keep your OVAL AIR Air Purifier working efficiently. OVAL AIR filters reduce 99.9% of allergens and odors at school or home, in the bedroom, nursery, or office.

Got an extra filter when I purchased the air purifier - so far the unit is working really well I never was one who believed in the air purifier hype. Anonymous. Mon Aug 25 2025

32.7" H x 22.5" W x 1.6" D

Efficient Return Air Filter Grille: The upgraded angled blades ensure optimal airflow while reducing noise. Made from durable, scratch-resistant steel with a powder-coated finish, it boosts ventilation efficiency and air quality in both homes and businesses.

Just what I needed after my remodel to freshen up my air vent area. Jayce. Gladewater, TX. Sat Jun 06 2026

Air Scrubber：Optimal Living Comfort

This air filter replacement part is made to fit the shop air filtration system. As a genuine replacement part, this replacement filter installs exactly in place of the old one. This efficient air filter features a 3-pocket design with deep pockets made to trap more particles. The air filter purifies the air by trapping particles as small as 1 micron, including non-metallic dust, wood dust, dirt, and other containments. To keep your inner filter clean, you'll want to clean out the trapped particles once every 1 to 2 months. You may need to clean the air purifier more frequently depending on how often you use your shop and how much dust your projects produce. When you remove the AFS-2000 inner filter, you can wash it or use air to blow out excess dirt and dust.

3-Stage Whole House Water Filter Replacement Pack with Polyphosphate Anti-Scale, GAC+KDF, and CTO Carbon Block Water Filters, Fits WGB32B-KDS

ORDERED FILTER WITH AIR CLEANER. F Wilson. NC. Tue Nov 26 2024

Expandable Furnace Filter:The expandable air filter fits various AC models. Made with electrostatic cotton, it captures pollen, smoke, and fine particles while avoiding air leaks for cooling & purification. Durable pleated design reduces replacements, and easy installation makes it ideal for home AC, air purifier, and vent.

The science of pure air is complex, but our mission is simple: to inspire a thriving life for all through pure, healthy air technology, proven by science. AirDoctor delivers the most approachable, affordable professional air purification technology on the market, so our customers can thrive in health, wellness, and life. We obsess over every detail and go the extra mile to test and earn third-party validation, so anyone who seeks it can have peace of mind that the air they breathe is as pure as the science that goes into our solutions. AirDoctorⓡ is the first affordable air purifier that not only removes particles as small as 0.003 microns but also removes odors, gases, toxic ozone, and volatile organic compounds (VOC).

Works great. Kelly. Mt Pleasant, SC. Fri Dec 26 2025

Filters work great for a good price.. Sandra. Murfreesboro, TN. Thu May 28 2026

Keep your space fresh with LV-PUR131-RF Replacement Filters. With 3-stage filtration, you can filter a variety of airborne contaminants, as well as help neutralize smoke, fumes, VOCs, and household odors.

Just bought these for extra filters.. Joanne. Thu Oct 08 2020

14" H x 14" W x 1" D

Specification Material: Aluminium alloy Compatible Devices: Air Conditioner, Furnace Color: Silver PackageInclude 1x Aluminum Furance Filter

16 x 25, Wraparound

Stellar Air decorative air intake covers are Magnetic and are made to replace the unattractive exhaust fan covers in your living space. Our unique designs will enhance the room by adding wall art to your hall, living room, ceiling or any space of your house. We transform eyesore air filter covers into beautiful wall decor. Our unique “snap in“ magnetic design means our vent covers can be easily installed without any drilling or headaches. You just have to remove your old ugly metal grill and snap in our Stellar Air vents. We include a new metal frame box, in case you need it and to guarantee a perfect fit. Please order by filter size behind the grill or the duct opening, measure correctly and do not measure your existing cover.

Perfect fit. Well made. A huge upgrade from the standard vent returns. I’ll be ordering more.. Justin. Moody, TX. Fri Jun 12 2026

2"H x 144" W x 240"D, White

King Canopy Drawstring Replacement Cover is the accessory for replacing an old and worn canopy. It is attached to the frame with ball bungees. Frame, bungees, and walls are not included.

Great replacement. Ben. Middletown, NY. Wed Apr 29 2026

3.58" H x 19.37" W x 24.37" D

Professional Grade Aluminum Electrostatic Air Filter: Breathe Cleaner Air:The aluminum electrostatic air filter uses advanced technology to capture pollen, pet hair, and small particles. Reusable and durable, it reduces waste from frequent replacements. Perfect for long-term use in HVAC systems, central air conditioning. Get yours now and breathe cleaner air!

30" H x 16" W x 1" D

For allergen filtration performance, the Glasfloss ZL MERV 11 pleated air filter can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 11 filter features the latest in media technology to achieve a MERV 11 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 11 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

When it’s time to upgrade your home’s heating and cooling system, Durastar is the smart brand to choose. Durastar HVAC products are backed by resilient technology to provide energy- efficient performance at a value-friendly price. When weather is extreme, you’ll have reliable comfort with Durastar. Rigorous factory testing means you can trust our brand of HVAC products to control the climate in your home in even the toughest conditions. During warmer months, your home will stay cool with air conditioners that operate at a quiet volume. When temperatures drop, rely on gas furnaces that are engineered to withstand the cold. Durastar products are designed to maximize air flow to give you consistent heating and cooling in every interior space no matter the season. Durastar – efficient, enduring, engineered for comfort.

Exactly what we needed—simple, solid, and does the job perfectly. The build quality is sturdy and clean, and it fit our unit seamlessly without any hassle. Installation was straightforward, and everything lined up exactly as expected, which saved a lot of time. It’s one of those behind-the-scenes pieces that you don’t think much about—but when it fits right and works right, it makes all the difference. Great value for the price, and I’d absolutely order again for future installs.. Megan. Prescott, WI. Wed Apr 29 2026

16 x 28 x 4 Furnace Filter, MERV 13 HVAC Ac Filters,12-Month Electrostatic Pleated Air Conditioner Filters, 2-Pack (Actual Size: 16.34 x 27.76 x 3.98 Inch) for Capturing Dust, Smog, Pet Dander High-Efficiency Purification Multi-Layer Filtration Superior Compatibility Stable and Durable Wide Application Long-Lasting Performance Folded Item Dimensions(LxWxH): 27.76 x 3.98 x 4.13 in / 705 x 101 x 105 mm,Nominal Dimensions: 16 x 28 x 4 in,Filtration Grade: MERV 13,Plastic Body with Screws Width: 3.98 in / 101 mm,Number of Pieces: 2,Expanded Height: 16.34 in / 415 mm,Item Model Number: SEN-02,Item Length: 27.76 in / 705 mm,Plastic Body Width: 3.82 in / 97 mm,Net Weight: 6.33 lbs / 2.87 kg,Expanded Item Dimensions(LxWxH): 27.76 x 3.98 x 16.34 in / 705 x 101 x 415 mm

Expandable Furnace Filter：The expandable air filter fits various AC models. Made with electrostatic cotton, it captures pollen, smoke, and fine particles while avoiding air leaks for cooling & purification. Durable pleated design reduces replacements, and easy installation makes it ideal for home AC, air purifier, and vent.

11" H x 9" W x 9" D

10-inch, 6-inch, and 8-inch round, universal make-up air damper kit for use with any Zephyr range hood motor operating over 300 CFM and up to 1,200 CFM, 600 CFM, and 1,000 CFM. When range hoods exhaust air out of your home, negative air pressure is created unless fresh outdoor air replaces the exhausted air. Zephyr’s make-up air damper is designed to balance the air pressure in your home by automatically opening it to allow fresh air while the range hood is operating.

Awesome product… fits hood perfectly. Sandra. Carson, CA. Mon Feb 21 2022

24" H x 24" W x 4" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated air filter can be used in AC and furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 test standard while maintaining low pressure drop and long service life. Glasfloss Z-line series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded, and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

24" H x 20" W x 1" D

Works better than most filters! Great product ! Love it!. Cs26. Mcminnville, TN. Mon Aug 01 2022

25" H x 20" W x 4" D

For reliable filtration effectiveness, the Glasfloss ZL MERV 10 pleated 4 inch air filter can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 10 filter features the latest in media technology to achieve a MERV 10 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 10 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and are manufactured in an engineered gradient structure. The thermally-bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.

Great product thank you. Anonymous. Fri May 31 2024

25" H x 40" W x 4" D

For allergen filtration performance, the Glasfloss ZL MERV 11 pleated air filter can be used in AC and Furnace systems for homes, apartments, business properties, school systems, government institutions, and industrial applications. The MERV 11 filter features the latest in media technology to achieve a MERV 11 rating per the ANSI/ASHRAE 52.2 Test Standard, while maintaining low pressure drop and long service life. Glasfloss Z-Line Series MERV 11 filter media is laminated to a heavy-duty, galvanized, metal backing that stabilizes the media during operation. Incorporates 100% synthetic fibers which are electrostatically charged, thermally bonded and manufactured in an engineered gradient structure. The thermally bonded fibers do not absorb moisture. The engineered grading structure media supports high dust-holding capacity and long filter service life.