Evaflue Stove Pipe - 90° Tee Piece with Cap - Black Vitreous EnamelEvaflue vitreous enamel flue pipe is 1. 2mm thick and has been enamelled on both the inside and the outside of the flue pipe, which helps prevent corrosion and has a satin black finish. The Evaflue black vitreous enamel 90 deg tee piece with cap is used with stoves, cookers or other appliances. The Evaflue pipe only has an inwards tapering male end and no outwards tapering female end. The male end must always be installed pointing downwards. This