16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack X Nutrients Reapply after 5–7 days if

Reapply after 5–7 days if needed for tougher weeds

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

and try it on your most demanding trees and shrubs

or suspend them to avoid accidental contact with children or pets

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 15 Air Filters 2 Pack X Nutrients Reapply after 5–7 days ifImportant 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,