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the readings may be inaccurate
When in doubt contact Hydro-Logic
healthy vegetative growth in vegetables and herbs
Extension Kit 8’11”
Includes remote control
16x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Growing Media the readings may be inaccurateImportant 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
