20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack flowering nutrients Ceramic HPS produces high quality

Ceramic HPS produces high quality yields and healthy vibrant plants ready for multiple harvests

The ONA odor neutralizing agents are released in a controlled manner so that every molecule is fully optimized

as activators of enzyme systems

translucent cover

57 gallon actual capacity

20x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 2 Pack flowering nutrients Ceramic HPS produces high qualityImportant 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,