20x25x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack discounted Pure results

Pure results

The isopropyl helps prevent excess build up on the plant

How do I clean and reset the trap

2-0-4 & BLOOM B

Double-ended system delivers higher PAR value with excellent uniformity

20x25x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack discounted Pure resultsImportant 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