20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack lighting-accessories custom-fitted cover that double insulates

custom-fitted cover that double insulates your existing air-cooled hood to prevent the heat your lamp generates from radiating out of the reflector and increasing grow room temperatures

making it the best water-cooled unit yet

fish and wildlife are not affected by it

Philips Elite Agro 315W T12 Lamp provides a compact and efficient metal halide solution for the horticulture market

Comes with protective case and calibration solution

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Air Filters 1 Pack lighting-accessories custom-fitted cover that double insulatesImportant 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,