Please look at pictures above for measuring explanations. Stock Masonry Door (Overlap fit/Ouside mount) Lead time 2-3 weels for stock doors and 4-6 weeks for custom fireplace doors. Custom doors are non-refundable once construction has begun. Thermo-Rite doors are made in the U.S.A. Benefits: Life guarantee on glass Tarnish free frames mean no polishing! Many styles and finishes to choose from Mounting hardware and instructions included The all new Chalet is an anodized aluminum glass fireplace enclosure with 2 3/4" top and side panels and an 11/16" bottom panel. This enclosure has clearview twin doors that open a full 180 degrees. "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