Vilpe KTV Classic Roof Ventilation Kit

Can be used for the ventilation of roof structures and attic spaces, as well as sewer pipes. Designed for plain standing seam or, if retrofitted, felt roofing. Contains a valve, pass-through, underlay ring and fixing screws, as well as a thick rubber seal on the bottom of the flange. Sealing compound (not incl.) required when the pass-through set is installed on a felt roof.
Contents: KTV ventilator, underlay ring, screws.