Please look at pictures above for measuring explanations. Custom Masonry Door (Overlap Fit/Outside Mount) CAN NOT BE USED ON FIREPLACE WITH SHEET METAL, FIREBOX, METAL FLUE PIPE OR METAL AROUND THE FIREPLACE!!!! Eliminate cold drafts and odor while gaining control of your fire with the SUPREME air tight fireplace door. Each SUPREME features twin door, steel framed, glass door selections that have a continuous woven gasket sealing them for the frame of the door. The combination of these gaskets with a positive locking latch, virtually eliminates heat loss from the home through the fireplace opening. Designed for maximum sealing quality, the SUPREME is ideal for closed door heating fireplaces and to solve problems with troublesome applications. STANDARD FEATURES: -Black finish -Sliding screen -2"mounting flange and hardware -Room air inlet -Tempered Glass -Wood block, black or brass spring handle OPTIONAL FEATURES: Ceramic glass (+$350) Swing style screen (+$104) Gold plated swing section (+$460) Glass Doors Are Made To Order. Lead Time 25-30 Business Days! Doors are strictly masonry doors and are not intended for Zero-Clearance (prefabricated) fireplaces. These doors are also not intended for vent free fireplaces or fireplaces with vent free gas logs. Product Made In The U.S.A. "Wow! My product arrived after three days. Thanks for the fast shipping, I am glad I ordered here. My friend ordered  from a different site and it took six weeks for the item to arrive!!! Keep up the good work." Mary Clarke, CA