16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 13 Plus Carbon 4 Pack grow media All Gavita CMH fixtures are

All Gavita CMH fixtures are FCC tested and compliant

Maximize growth

Lawns (spot-treating)

Its unique formula also allows for outstanding control of the vast varieties of powdery mildew and mold found in the garden

Best of all

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 13 Plus Carbon 4 Pack grow media All Gavita CMH fixtures areImportant 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,