Heng’s White Thermal Pane Roof Vent Cap

Replace your present Ventline, Elixir, or Hengs lid to save energy and stop water damage caused by condensation. This one piece cap has no seams or welds, and has an air space between two layers, stopping condensation and mold from forming on the inside and rotting your RV roof. Keeps the hot or cool air inside or outside as it belongs, giving you a thermal break!