FLANDERS® EZ FLOW® II MERV 4 ECONOMY FIBERGLASS AIR FILTER, 16X25X1 IN.

These economy fiberglass and disposable air filters are designed to protect furnace and central air units in residential and light commercial applications. They’ve been tested by Underwriters Laboratories Inc. and are classified as UL 900 Class 2 for flammability.^^Their UL marking appears on the frames. They also have a Merv 4 rating.^^Construction|Heavy Chipboard Frame|One-Piece Design||Eliminates Corner Separation|Continuous Filament Spun Glass Filtering Media|Resinous Bonding Agent||Provides Rigidity and Resistance to Media Compression^^Functioning^EZ Flow II filters function without a retainer by adhering the frames directly to the media, which has a light skin. Sealing is accomplished with a resilient hot-melt adhesive running along the upstream and downstream sides of the frames.