Custom Air Filters and Air Solutions Since 1957

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Foam Filter

Permatron's foam air filter consists of 1/2" thick 20 PPI polyether polyurethane foam supported by expanded metal mesh on both sides.     Two models are available:  Model FFA  has a 1" thick aluminum frame and expanded aluminum mesh support grids.  Model FFG comes in either a 1/2" or 1" thick galvanized steel frame and expanded metal mesh support grids. Both are washable air filters that can be rinsed with water. Standard and custom sized furnace air filters available.