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Lighting > Bulbs & Shades > Light Bulbs > Part #: SB-658
SKU #: SBX1023

Sunbox 40W Light Bulb

(View all from Sunbox)

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Sunbox 40W Light Bulb

These 40 watt full spectrum bulbs will make splendid replacement bulbs for any Sunray or Sunsquare light boxes.


  • Researchers recommend replacing all the bulbs in your light box every 2 years to maintain the correct light output
  • If you own one of these old discontinued light boxes, please check to see how many bulbs your unit takes before ordering. Some of these four-foot units took 8 bulbs, while others only took 6
  • 40 Watt replacement bulb for sunbox 1, sunbox 2, and sunbox light weight models
  • Most of our customers, in practice, replace bulbs every 3-4 years with regular use


  • Overall Height - Top to Bottom: 48"
  • Bulb Diameter: 1.125"
  • Overall Product Weight: 1lbs

Special Offer:

56 Issues of Sports Illustrated Magazine

Included with purchase ($20 value). 

Sunbox 40W Light Bulb

Weights & Dimensions

  • Overall Height - Top to Bottom: 48"
  • Bulb Diameter: 1.125"
  • Overall Product Weight: 1lbs


Product Type: Light therapyBulb Color: White
Frosted Bulb: NoPrimary Material: Glass
Number of Items Included: 1Vibration Resistant: Yes
Shatter Resistant: NoCorrosion Resistant: Yes
Three-Way: NoFilament Type: CC
Dimmable: NoAntique Replica Style: No
Instant/Rapid Start: YesEnclosed Fixture Required: Yes
Covered Lens: NoSafety Coated: No
Energy Efficient: YesMinimum Operating Temperature: 65 Fahrenheit
Maximum Operating Temperature: 90 FahrenheitWattage: 40 Watts (W)
Voltage: 240 Volts (V)Average Rated Life: 8000 Hours
Brightness (Lumens): 10000Color Temperature: 5000 Kelvin
Color Rendering Index (CRI): 90ANSI Code: T12
Commercial Use: YesCountry of Manufacture: United States


Assembly Required: NoInstallation Required: Yes
  • Tools Needed for Installation: Screwdriver
Additional Parts Required: No 


Product Warranty: 2 years 


GSA Approved: YesCalifornia Title 24 Compliant: Yes
TCLP Compliant: YesUL Listed: Yes
Dry, Damp, or Wet Location Listed: DryNEMA Certified: Yes

About the Manufacturer

As the original light box company, Sunbox has more years of experience in the field than any of their competitors. Over the years, their product line has changed considerably, as they have incorporated new technologies, such as energy-efficient electronics, lighter weight (but durable) materials, and better quality bulbs, into their designs and have taken advances in clinical research reports, such as higher-intensity 10,000 lux light output and tilted angle designs, into account.

To maintain their status as one of of the leading manufacturers in therapeutic lighting, Sunbox keeps up to date with ongoing clinical studies and medical research to stay consistent in developing the most innovative and highest quality therapeutic lighting products that you will find anywhere.

Sunbox's mission is to help people live healthier, happier lives by providing excellent, reliable products at a fair price.

Sunbox 40W Light Bulb

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When you buy a Sunbox 40W Light Bulb online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Sunbox Part #: SB-658 here. If you have any questions about your purchase or any other Light Bulbs product for sale our customer service representatives are available to help.Whether you just want to buy a Sunbox 40W Light Bulb or shop for your entire home, Wayfair has a zillion things home.
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When it comes to shopping for furniture, we know that first-hand experience is important in helping you make an informed decision about the item you are purchasing. Wayfair has independently evaluated this brand — no money was exchanged, no favors were fulfilled—so that you can shop with confidence. More Info



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40W Light Bulb is also sometimes listed under the following manufacturer numbers: SB-658