Vent Muller Exterior Plastic - A Breath of Fresh Air for Your Vehicle! Welcome to the world of efficient air circulation with the Muller Vent! Designed to draw the air OUT effectively, this product is a must-have for your Van, Bus, Caravan, Truck, Trailer, or Float. Efficient Air Circulation: As air passes through the vent, it creates a vacuum, drawing stale air out and ensuring a fresh environment inside. High-Quality Material: Made from durable PVC Plastic, our vent is built to last. Aerodynamic Design: With its low-profile design, it protrudes only 50mm above the roof, minimizing wind resistance. Easy Installation: Simply cut a 120mm hole and place the vent on top. The teardrop shape should face forward for optimal performance. Weather Proofing Suggestion: Use silicon or Sikaflex for a weatherproof seal. Secure with rivets or screws. Product Dimensions Length: 285mm Width: 185mm Height: 50mm Hole Cut Size: 120mm Product Code: 650-04100