RV Roof Vent 13.39x13.39in White Motorhome Ceiling Ventilation Lid with Screen and Support Rod for Trailer Caravan Camping Vehicle Item Type: Roof Ventilation Cover Cutout Size: Approx. 340x340mm / 13.39x13.39in Vent Dimensions: Approx. 420x420x134mm / 16.54x16.54x5.28in Compatible Installation Thickness: Approx. 20-55mm / 0.79-2.17in Features: Equipped with stainless steel screen and support rods, adjustable support rods from 0-31.5° with knob, white top cover to block sunlight with sealing strip for water resistant seal. Can be used as a ventilator and repair part for leaking roofs. Fitment: Suitable for RV, Camping Vehicle, Motorhome, Trailer, Caravan Installation Steps: 1. Determine installation position and mark it 2. Drill a hole with a 340x340mm dimension 3. Insert vent into the prepared hole 4. Install fixing clip frame and secure with screws to complete installation Note: If you have a leaking or localized hole in the roof of your compartment, this vent can be used as a patch piece to install in the damaged location, providing ventilation inside the compartment and repairing the hole at the same time.