16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 2 Pack Lighting & Electrical Components and utilization of nutrients by

and utilization of nutrients by breaking them down into smaller particles so that the plant more easily absorbs them

airborne particles

the PRO version uses a water-cooled heat exchanger to cool nearly 90% of the heat produced by burning propane

Alg·A·Mic™destresses the plant after overfeeding

Centurion Pro 1

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 14 Plus Carbon 2 Pack Lighting & Electrical Components and utilization of nutrients byImportant 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,