This set of premium non-stick, polytetrafluoroethylene-coated, fiberglass mats is made for our entire commercial range. This does, however, exclude our 28 Tray unit which will use the 20" x 33.5" size mats. These copper-colored non-stick mats measure 16" x 16" and will fit any of our normal commercial range dehydrator trays perfectly, whether using mesh or pan trays. This set of non-stick mats is made from 100% PFOA-Free materials, but rather premium PTFE-Fiberglass coating. We use no PFOA, silicone, or other dangerous chemicals! Certified as safe. These mats are heat resistant up to 500°F and 100% non-stick. They will keep small food from falling through the mesh and keep your stainless steel trays super clean! Made with heat-resistant advanced materials that will not burn. These mats are reusable, can be utilized on both sides and can be used over 1000 times. Dishwasher safe and super easy to clean.