8x20x1 Pure Green Plus Carbon Eco-Friendly AC Furnace Air Filters 12 Pack AIR FILTER BOXES Hang the BlackBird at 20–24

Hang the BlackBird at 20–24 inches above the canopy for flowering

nothing that can be absorbed by your plants

1 x 110V Control Board

NOTE: Not compatible with Phantom and Xtrasun ballasts

and 30 series pHTestrs (OK3563410

8x20x1 Pure Green Plus Carbon Eco-Friendly AC Furnace Air Filters 12 Pack AIR FILTER BOXES Hang the BlackBird at 20–24Pure Green Plus Carbon Eco Friendly AC Furnace Air Filters by Nordic Pure starts with an environmentally responsible non woven, high loft, antimicrobial filter media made of fine gauge polyester. As we continue to keep our eyes on media technology advances, our Pure Green media will be changing its appearance. Please expect the same quality and performance you have come to rely on from our Pure Green media which will now be white in color on the