20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 2 Pack Grow Tents If you change your pre-filters

If you change your pre-filters and the product water still flows slowly then it’s an indication you need a new membrane

and can be completely disassembled for easy cleaning

It comes with CenturionPro's standard Toro hardened steel cutting reel with 5 high-quality blades along with CenturionPro's non-stick Quantanium coated tumbler to give you 40% more trichome preservation

The extended collar allows for easy duct installation and taping

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 2 Pack Grow Tents If you change your pre-filtersImportant 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,