Generic 12X24X4" RETURN GRILL FILTER - MERV 11 (5 Pack)
Mounts in most return filter grilles. Pleated for greater media capacity. Low pressure drop provides a comfortable air flow. Maintains equipment efficiency longer than standard filters. MERV 11
The Return Grille Filter provides high efficiency, long life alternative to a 1" filter. It captures a significant amount of the airborne particles in the air that circulates through the filter.