16x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack environmental-controllers or as a top dress

or as a top dress for encouraging vigorous flowering and fruiting

With zero OSHA rating

Max Conductivity: 20

The ultimate tool for your indoor grow and your outdoor life

1-year limited warranty

16x24x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 6 Pack environmental-controllers or as a top dressNordic Pure Pure Carbon Pleated Odor Reduction MERV 8 Air Filters is made with a durable non woven polyester base media infused with naturally derived charcoal, created to eliminate odors in your office or home. Our pleated design provides three times as much carbon media per A C filter but maintains excellent air flow. Our Pure Carbon air filters are manufactured using a heavy duty, moisture resistant beverage board frame. There is a metal mesh