Most series of Pro-Clad and E-Clad from the Biltbest classic series of windows and doors with Wood interiors have a Roll-formed aluminum clad exterior and it was standard in three classic exterior color options – white, sandstone and bronze. We offer all types of aluminum clad replacement packages from one single window to the entire house full – we offer Sash Replacement Kits, Sash frames with and without glass, LowE Glass, tempered glass and high impact glass replacements as well. Each Sash is made to fit into your existing window frame and it is an easy installation that takes about 20 minutes.