Our Steel Glass Doors are with two high quality galvanized steel sheets over a kiln cured perimeter wood frame. Polyurethane foam is injected into the door core. 1. Door surface panels are 24 gauge galvanized steel sheet, conversion-coated to permit paint bonding on both sides. 2. Door stiles and rails dried, primer coated pine. 3. A full wood lock block is provided for reinforced mounting of the lockset and/or deadbolt. 4. polyurethane core 5. All door surfaces are primed white, other finishes may be applied. 6. Doors are prepared to receive hinges and standard lock sets. 7. glass designs : oval, half view ,half lite, sun burst, full view Inserts: One lites ; Divided Lites ; 1/2 lites ; Decorative glass