20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack rockwool Perfect for growing salads and

Perfect for growing salads and herbs or for early season seed starting

leaving the food grade lubricant behind

floral components

UJB can also be used in conjunction with CES' 2 other additives to produce custom foliar applications

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20x25x4 (3 5/8) Pleated Air Filters MERV 13 Plus Carbon 1 Pack rockwool Perfect for growing salads andImportant 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