20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 6 Pack commercial-lighting-fixture T bags fit standard 5-gallon

T bags fit standard 5-gallon buckets

The ballast is low frequency ballast designed specifically to run low frequency CMH arc tubes

27 x PotPro™ | Platform

Adjust pH to proper levels after mixing all fertilizers and additives

20x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 6 Pack commercial-lighting-fixture T bags fit standard 5-gallonImportant 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 20x20x4 filter