Filters extend either inside or outside the enclosure. Hexagon, square, rectangle, and diamond grid patterns are about 85% open. There are a variety of foam media options for use in filtering. Optional NEBScompliant Quadrafoam air filters are flame retardant and meet UL 94 HF-1 standards for electronics.

Universal Air Filter Co.
1624 Sauget Industrial Pkwy.
Sauget, IL 62206
(800) 541-3478