Daniel D Gaithersburg , MD May 02, 2015 Appliance: Frigidaire Wall Oven GLEB27T9DBB Frigidaire Oven Gleb27t9dbb: I broke the outer glass of the oven door while cleaning inside the 2 panes. How to replace Outer Glass Assembly For Oven Door. Order new Outer Glass Assembly and it only took about 15 minutes to repair. So glad that I did it myself! Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes