1. Replace the RV and boat air flow cover. 2. Special hat design, rainproof, can accelerate air circulation. 3. Made of nice ABS plastic for corrosion and impression resistance. 4. Easy to put in and use. Suitable for:RVs, station wagons Colour:White/Black Material:Plastic Size:about 134/5 Package Contents: 1 * Ventilation Cap(other kit demo within the photo is not included) Only the above kit content, different item shouldn't included. Note: Light mirrored image and assorted exhibits could cause the color of the item in the photograph just a little diverse from the genuine thing. The dimension allowed error is +/- 1-3cm.