Kootenay Filter Pre-Filter 330SL 4' x 8' 5 in square reach-through holes

5 in square reach-through holes

Special IR blocking top

rope hangers

2100 µmol/s at 1000W: Independently verified as the highest-output 1000W DE HPS lamp available

Kootenay Filter Pre-Filter 330SL 4' x 8' 5 in square reach-through holesEnhance Indoor Air Quality with Reliable Pre Filters Maintain optimal indoor air quality effortlessly with the Kootenay Filter Pre Filter 330SL. Engineered specifically as a replacement pre filter for the SL330 model without flange, it captures and blocks larger particulates, significantly extending your main filter's lifespan. Available with versatile 4 and 6 flange options, this pre filter measures 12 inches in diameter and 13 inches in length,