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Hydropolis Grow Tents offer the traditional popular sizes
If your set up seeks a more energy efficient light source
and lamp failure protection
8 Liters (0
16x20x4 (3 5/8) Pleated MERV 10 Air Filters 6 Pack grow-system/-trays/-reservoirs Hydropolis Grow Tents offer 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 16x20x4 filter
