Dale P Midland , MI October 04, 2016 Appliance: Jenn-Air Self Cleaning Slide-In Downdraft Electric Range S136-C Jenn-Air Range S136-C: Glass in door shattered. How to replace Window-Pac. My husband replaced the broken glass by removing the oven door, dismantling it and inserting the glass cartridge in place. He said it went well. The only problem was removing one rusted screw. Replacing the oven door seal seemed to be an easy job. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes