20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack spl_centurionpro four (4) 240V outputs

four (4) 240V outputs

and a self-sealing fitting

00 is only visible when using specific pH electrodes and will replace pH 4

Promotes higher rate of metabolic activity and resin production through the use of UV and far-red spectra

Max Ambient Temperature : 113º F / 45º C

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 4 Pack spl_centurionpro four (4) 240V outputsImportant 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,