20x25x5 1/4 (5.25) Goodman/Carrier/Amana Replacement MERV 12 Air Filters 2 Pack Tents & Tarps Stop using it in the

Stop using it in the last week of flowering

Shelf life is typically 2–3 years when stored properly

Knockbox 3/100 Base

The full spectrum iL1 LED gives the master horticulturist options for unique applications

When plants are being moved from one stage to another

20x25x5 1/4 (5.25) Goodman/Carrier/Amana Replacement MERV 12 Air Filters 2 Pack Tents & Tarps Stop using it in 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. We also carry 4 3 8 and 4 7 8 inch depth filters,