16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack veg nutrients Coordinates supplemental CO2 with your

Coordinates supplemental CO2 with your ventilation equipment

the materials used are approved for contact with food products

This pump has 1 impeller

Humic acid is a carbon source that contributes to multiple metabolic processes in plants and can be particularly beneficial when used in the root zone

promotes healthy

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack veg nutrients Coordinates supplemental CO2 with yourImportant 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,