Made of thick ABS plastic and then primed with gray plastic primer, they are ready for you to paint in the color of your choice using common spray paint like Rust-o-leum.
To attach it to your trailer, you'll need 8 rivets, a small piece of window screen and some quality caulk or butyl tape to form a seal. It comes undrilled so you can drill it to match the existing rivet holes in your trailer roof. If you aren't sure whether this is right for your trailer, please check to make sure you have a 1-1/2" (ID) ABS or PVC pipe (slightly less than 2" OD) extending out the roof of your trailer. Contact us if you need guidance.