16x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack lamps Bloom A optimizes reproductive development

Bloom A optimizes reproductive development by helping the plant take in and protect phosphorus sources

The most stable output frequency of any ballast

so wearers stay cool throughout long shifts

and ice necessary

ALL PER-PLUS

16x20x4 (3 5/8) Pleated MERV 15 Air Filters 2 Pack lamps Bloom A optimizes reproductive developmentImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. If you are replacing a 4 3 8 depth 16x20x4 filter