16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 1 Pack LUXX Bar THIS UNIT REQUIRES A VACUUM

THIS UNIT REQUIRES A VACUUM PUMP AND NITROGEN TANK WITH REGULATOR TO FUNCTION

This is perfect for a start-up size garden through to a full growth garden

Convenient Application: Superthrive Grow is suitable for hydroponic systems

- 1” heavy webbing reinforcements

cut through the layers of plastic and you now have a zipper door

16x20x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 1 Pack LUXX Bar THIS UNIT REQUIRES A VACUUMImportant 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. We also carry 4 7 8 and 5 1 4 inch depth filters,