This universal, streamlined RV Range Exhaust Vent is engineered to replace Ventline, Elixir, and Heng's exhaust vents. Once the damper is unsecured, the exhaust vent automatically opens when the range hood fan is activated, allowing cooking odors and smoke to be exhausted. The damper closes automatically to prevent insects, rain, and dust from getting inside the RV when the range hood is not in use. Its low-profile design extends only 1.6" from the RV's exterior sidewall. Specifications:• Weight: | Heng's RV Range Exhaust Vent, White