Weller ft zero smog 2 fume extraction unit and accessory kits weller ft91012699 the wellerft zero smog 2 produces more suction force than its predecessor and is powerful enough to remove all types of fumes from the work bench it can produce 190msup3h suction volume and offers a high extraction power of 3000pa even with a used filter in placethe performance increase is provided by a high quality reliable long life maintenance free brushless ec blower in combination with flexible and a