Prima Klima K1604 Whisper Carbon Filter 720m3

The K1604 Whisper is the low-noise version of the Industry filter. Its longer 800mm body slows the air across the carbon, which trims turbulence and the hiss that comes with it. Optimal airflow runs at 720m3 per hour, up to 960m3 per hour at full pull. The flange stays at 125mm.

Quieter running suits a grow room near a bedroom or office. The trade-off is size and weight, at 9.9kg, so use sturdy suspension. Double carbon density gives the long odour control growers expect from the Industry line. Pair it with a whisper blower fan to keep the whole extraction line discreet.