16x20x4 (3 5/8) Pleated MERV 13 Air Filters 6 Pack Growing Media the readings may be inaccurate

the readings may be inaccurate

Twister T2 Tumbler Guide Assembly

When applied to a plant's root system

When in doubt contact Hydro-Logic

Smart Pot new fabric raised bed—a size for every situation

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