20x25x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack trays This highly efficient method of

This highly efficient method of injection helps maintain more consistent CO2 levels while saving money year round on expensive CO2 tanks

At the narrowest setting your light casts a 36" wide footprint and at the widest setting the footprint is 72" wide (at 16" height from the top of the canopy)

Make your nutrient solution easy to manage with the GroLine Monitor

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20x25x4 (3 5/8) Pleated MERV 12 Air Filters 1 Pack trays This highly efficient method ofImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter