20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 13 Plus Carbon 4 Pack ph-ec-tds-meters-and-solutions This pump is compatible with

This pump is compatible with TurboKlone's patented T24 cloning system

Ultra-durable and ultra-light extruded aluminum alloy handles

• Molded

Snap & Pop TechnologyTwo rubber molded inserts to pop in Short/Long Plunge Drippers

20x20x5 (4 3/8) Honeywell/Lennox Replacement Furnace Filters MERV 13 Plus Carbon 4 Pack ph-ec-tds-meters-and-solutions This pump is compatible withImportant 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,