20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack shredder giving you flexible placement options

giving you flexible placement options anywhere in your facility

Suggested Uses: Can be used at time of planting and every 2 weeks after that for optimal performance

cutworms and tomato hornworms

Strikes both metal halide and high pressure sodium bulbs

Lighting Coverage - Veg 3

20x25x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack shredder giving you flexible placement optionsImportant 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