Hang your drywall, mud and even paint the walls before you install our knock down steel drywall frames. They are easy to install and very durable no matter the size of your door. A few easy steps and you’re ready to hang your door and hardware. Our steel door frames are fire rated up to 90 minutes for knock down drywall or up to 3 hours rated for welded frames. We stock several different sizes to fit your wall thickness or we can make to fit whatever your wall size may be, CDF can get what you need when you need it.