16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack Controllers the cut kit tray is

the cut kit tray is ideal for seed and cutting propagation

Achieving an IP-67 rating

which will promote the growth of beneficial organisms in the soil and help deter plant parasitic nematodes

filters and ducting

then water in the NemaSeek for complementary control of pests in your soil

16x20x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack Controllers the cut kit tray isImportant 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