16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs You can also place planters

You can also place planters into the trays

Min Salinity: 0

moth fly and pupae of thrips and springtails

99 x Micro Drip | 2-Way Parallel Split Micro Tube Dripper Assembly 30" x (Single Unit)

16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack Grow System/ Trays/ Reservoirs You can also place plantersImportant 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