Heather D Lubbock , TX February 12, 2016 Appliance: Whirlpool Electric Wall Oven GBD307PDS7 Whirlpool Oven Gbd307pds7: Broken inner glass and rusted oven shelves. How to replace Rear Oven Door Glass. Super fast delivery got the parts here in two days! The video on how to replace the inner glass panels was extremely helpful and thorough. Replacing the oven doors was straightforward. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes