20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 10 Pleated Plus Carbon 2 Pack spl_hf 50% stronger than the most

50% stronger than the most popular brands on the market yet it costs the same

Only ONE electrical outlet needed for BOTH water and air

Plant-touching component to be replaced during hot-swap

We recommend repeated applications to keep pace with the fly's life cycle and maintain a healthy Fly Eliminator™ population

tobacco aphid (Myzus nicotianae) and bird cherry-oat aphids (Rhopalosiphum padi)

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 10 Pleated Plus Carbon 2 Pack spl_hf 50% stronger than the mostImportant 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,