FrontLine provides the highest quality, low to free- maintenance clad systems on the market. Their pre-clad door frame system is made of the industry’s best materials. It’s made of 16-gauge heavy-duty extruded aluminum jamb cover, not a coil stock wrapped frame. Their Pre-Clad Frame works with all our aluminum profiles (crownline, brickmould, and wide add-on casings) which snap onto the aluminum frame locking legs. The extruded aluminum Pre-Clad Frame is specifically designed for pre-hang facilities that want to offer their customers the best available clad frame system with precise engineering.