16x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack special-order This Starter Kit is a

This Starter Kit is a 3-week short cut to tissue culture clean

To use our Incubator™ Plugs for seeds:

Carbon Quantity x Carbon Quality = Filter Capacity

The thermal or impedance protected gear motor is safe

16x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack special-order This Starter Kit is aImportant 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