20x25x1 Pure Green Plus Carbon Eco-Friendly AC Furnace Air Filters 24 Pack ventilation and ducting Higher humidity is generally necessary

Higher humidity is generally necessary with higher temperatures

If it dries

Packing: 50 units per case

No additional additives or supplements are required when following the full 4-part system

they have created lamps which offer significantly more usable light energy for hydroponics and horticultural gardening

20x25x1 Pure Green Plus Carbon Eco-Friendly AC Furnace Air Filters 24 Pack ventilation and ducting Higher humidity is generally necessaryPure 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