20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack Monitors & Timers The Gavita Pro 1700e LED

The Gavita Pro 1700e LED fixture and Gavita E-Series LED Adapter are FCC compliant

Cornfield Ants

BPA-free and environmental-friendly felt

Available in a closed and open top version

EC/TDS/temperature meter that measures high range conductivity in mS/cm and TDS in ppt

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack Monitors & Timers The Gavita Pro 1700e LEDImportant 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,