Custom door options include (but are not limited to):

Core Material - Polystyrene, Honeycomb, Steel Stiffened, Urethane, or Temperature Rise Fiberboard
Extra Heavy Duty Door Skins (16-, 14-, 12-, 10- gauge)
STC - 45, 49, and 51 ratings
Bullet Resistant
High End Commercial Wood Doors
Dutch Doors
Storefronts
Lead Lined Doors and Frames
French Doors
Stainless Steel (Brushed and Mirror Finish)
Radius Frames
Stile and Rail Doors
Thermal Break Frames