Merv 4, Polyester Air Filter

Brookaire's polyester MERV 4 air filters are built with a sturdy single-piece craft board frame. Our pinch frame design for 1" filters provide rigid construction that increases the life of the filter. The corners are sealed to ensure no air bypass through the frame. Polyester MERV 4 air filters air available in 1" and 2" depths, and provide an economical alternative to pleated filter styles. Poly filters are commonly used in residential HVAC systems, and in HVAC systems that do not have the air flow capacity to use a Pleated filter.

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