20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack Monitors & Timers BPA-free and environmental-friendly felt

BPA-free and environmental-friendly felt

MH lamps are predominantly blue spectrum focused and HPS lamps are predominantly red/yellow focused

• Lightweight aluminum construction—easy to hang

Size: 24x21x13

The lid has alpha numeric symbols formed directly into the plastic

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 12 Pleated Plus Carbon 1 Pack Monitors & Timers BPA-free and environmental-friendly feltImportant 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,