20x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Commercial Lighting Fabric is breathable to help

Fabric is breathable to help keep you cool

Longer shelf life than wet bagged soil

Pre-harvest treatments with Clearex can enhance flavors and increase yields in fruits

handheld dry trimmer on the market specially designed for the processing of dried medicinal herbs and hops

For all foliar applications of specific crops

20x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Commercial Lighting Fabric is breathable to helpImportant 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