This RV vent in the Jensen plastic non-powered model is from Elixir. This RV vent is a complete roof vent with deep drawn off-white plastic bases, white screen, and white garnishes to replace the Jensen plastic base standard mount vents. This RV vent fits roofs 1" to 2 1/16" thick. It features radius corners, positive=seal weatherstripping, self-centering device for perfect alignment, mesh screen and an acrylic UV resistant translucent lid. Its hand crank opens and closes the lid securely. Model # 31-1789 includes a 12V fan and a light.