Product: 3 PACK RV Vent Pipe Caps Color: Black Material: Polyethylene plastic with UV coating Fits: 1 to 2 3/8 inch pipe Inner diameter: 3.8 inch Base outer diameter: 5.3 inch Overall height: 3 inch Net weight per cap: 62 g Gross weight per cap: 67 g Package contents: 3 vent cap covers Key benefits Protects and vents: Shields your RV or camper sewer and roof vent pipes from sun, wind, rain, and snow while allowing exhaust of unpleasant odors and improving airflow. Durable outdoor material: Made from thick polyethylene plastic with a UV coating to resist fading and degradation from sun exposure. Easy maintenance: Twopiece removable design lets you lift the cap off the base for inspection, cleaning, or access to the vent pipe. Secure mounting: Base includes six screw holes for firm attachment to the vent pipe flange. Screws are not included in the package. Simple replacement: Dimensions and design suit most common RV vent pipes and sewer vents; check pipe size to ensure compatibility. What makes it practical Correct sizing: Inner diameter 3.8 inch and base diameter 5.3 inch match common vent openings; overall height 3 inch keeps a low profile on the roof. Lightweight and stable: Each cap is light yet sturdy, making handling and installation straightforward. Weather protection plus ventilation: Keeps out precipitation and debris while permitting venting to reduce odors inside the vehicle. Installation overview 1. Clean and dry the installation surface thoroughly. 2. Apply a generous bead of silicone sealant around the pipe or base flange. 3. Position the base, press it into the sealant, and align the screw holes. 4. Fasten with appropriate screws (not included). 5. Add sealant around the base edge for a watertight finish. 6. Snap the cap onto the base until it clicks into place. Use scenarios a cracked or worn sewer vent cap on a motorhome to restore weather protection and odor ventilation. Install on a camper roof vent pipe to prevent water intrusion while maintaining proper plumbing venting. Keep a set in a maintenance kit for seasonal RV servicing or emergency replacements on the road. Notes Confirm pipe diameter matches the listed fitment before installation. Use silicone caulking to create a watertight seal around the vent cap base. Screws required for mounting are not included.