20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack drying-racks More about Integra Boost 45mm

More about Integra Boost 45mm ROUND 62% PACK (Case of 3500):

For use with greenhouses

More options means more control over the job

Symbiotic bacteria are released

the Flowmaster beeps

20x25x4 (3 5/8) Furnace Air Filters MERV 8 Pleated Plus Carbon 1 Pack drying-racks More about Integra Boost 45mmImportant 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 20x25x4 filter