20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack Hydroponics Gardeners can see all the

Gardeners can see all the benefits of growing with a Smart Pot even if they grow in trays

overcurrent protection

which translates to healthier

and Enzyme Blend

Total Lumens 29329 lm

20x25x4 (3 5/8) Furnace Air Filters MERV 10 Pleated Plus Carbon 2 Pack Hydroponics Gardeners can see all theImportant 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