21st June 2022 Why do you use American Oak on Intrim Connecta Rail? The timber component of the Intrim Connecta Rail is supplied in American Oak, a premium hardwood that is easy to install and light in colour, allowing for the option of darker staining. We only use select grade American Oak which eliminates any bad knots. As it is a natural product there will be slight variations in colour which is to be expected. We choose to use American Oak for several reasons. I provides a superior finish, it machines a lot better than other hardwoods resulting in a smooth finish, and it is more cost effective than other hardwoods.