20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 4 Pack Air Purification Soul Infinity catalyst is derived

Soul Infinity catalyst is derived from Soy Protein Hydrolysate

We've incorporated DYNOMYCO® into every transplant cycle and the difference in early establishment is clear

Volume: Can fill up to 3 gallon depending on grow media

- can be plumbed to multiple grow spaces

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 15 Plus Carbon 4 Pack Air Purification Soul Infinity catalyst is derivedImportant 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,