125mm Vent & Flue for Chef, Westinghouse Rangehoods - Part # AR125WV125mm Wall Vent Adaptor & Flue for Rangehood Venting. Part No. AR125WV, 900403779. Outside wall vent and flue pipe that attaches to the rangehood to allow venting outside. Requires the use of a 125mm rightangle bend adaptor to be fitted to the top of the rangehood if the vent outlet is on the top of the rangehood. Some models also have a vent outlet at the rear and this kit can be attached to those with the use of a 125mm ring adaptor. Flue length