16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack X Nutrients Note: To increase efficacy keep

Note: To increase efficacy keep filter clean and greenhouse humidity levels below 75%

Ready-to-use

Simply pull straight up on the mouthpiece to remove it and access the heating chamber

making it suitable for both slicing through stems and digging around tough root crops

Extremely energy Efficient

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack X Nutrients Note: To increase efficacy keepImportant 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,