Made of plastic material, to chemical and thermal . Low noise, giving you a quiet space.Internal mesh structure keeps unfamiliar objects out. Universal roof vents for easy installation and operation Suitable for RV, camping, RV, tugboat, yacht, caravan, yacht, etc. Rainproof design: The air outlet is installed downward to prevent rainwater, car wash water, rainwater and exhaust. Name: RV side air cooling vent ventilation fan Rated voltage: 12v Power: 15w Protrusion from the vehicle body: 29mm Opening size: 121x61mm Applicable models: RV/trailer/caravan High-power fan, 8500 rpm, 4 bare wires at the terminal, power 15W Note: Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Black Material:plastic Package Contents: 1 x Exhaust Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.