16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack eligible-for-discount you’ll get the highest capacity

you’ll get the highest capacity harvesting system in the world

especially when growing situations require high air-capacity and low water-retention media

Test the RO and source/inlet water to see what percentage of the inlet water’s PPM the 150 ™ is filtering out (rejection %)

CSA certified

16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack eligible-for-discount you’ll get the highest capacityImportant 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,