heng's 14" rv roof vent kit w/butyl tape | white | #71111-c | rv vent replacement (1 pack) heng's strong fine mesh screen extra strong galvanized steel roof flange with mill finish dimensions 8.5" round x 1.5" deep vent color is white will replace existing elixir or ventline. includes 28 screws and 70" of butyl tape for mounting your roof vent. products standard oem dimensions (opening 13.25" x 13.25") mounting flange (16.5" x 16.5")