20x25x4 Air Filter by GlasflossProduct Details Glasfloss Air Filters are an excellent choice for any air conditioning system and are the ones used by the professionals. They are manufactured right here in Florida, by Floridians. Each air filter uses filter media that is made from 100% synthetic material that will not support microbial growth and does not absorb moisture. The media is supported by a galvanized, expanded metal backing that resists rust and corrosion. The filter frame

Filter Support:

One-piece craftboard frame made from 100% recycled material

FSM2X2400A

Protect your HVAC system with Glasfloss GDS 16x24x1 disposable furnace filters

FSU4P3000A

20" x 24-7/8" x 4-3/8" (20" x 24

Each air filter uses filter media that is made from 100% synthetic material that will not support microbial growth and does not absorb moisture

FSU4P2400A

19-3/4" x 24-1/4" x 4-7/8" (19

19-1/2" x 19-1/2" x 3-3/4" (19

Protect your HVAC system with Glasfloss GDS 14x25x1 disposable furnace filters

FEM4X4800A