Efficiencies of 99.97 % up to 99.99 % High quality glass fibre paperLowest initial pressure dropHigh quality standard due to Quality Assurance SystemHighly economic through high final pressure dropAny airflow direction possible making installing easyRigid frameHigh quality glass fibre paperZinc coated profilesFilter height only 292mmHigh quality standard due to Quality Assurance SystemHigh burst pressure (> 2000 Pa)Highly economical through high final pressure dropUseable in two flow directionsFilter tested according to BS EN 1822