Model number is KGSS907SSS. Slide-In Range features 4 Sealed Burners, 15,000 BTU TripleTier Burner, 4.1 cu. ft. Even-Heat True Convection Oven and Warming Drawer. Never had any issues with this range, it’s clean and everything works. Comes with installation and instruction manuals.
It's discontinued, but you can see full specifications at this link: https://www.designerappliances.com/kitchenaid-kgss907sss.html
Also selling matching KitchenAid Architect Series II 21.9 cu.ft. Stainless Steel Refrigerator w/Bottom-Freezer at this link: https://www.kijiji.ca/v-view-details.html?adId=1690796896 and KitchenAid Architect Series II 24” Stainless Steel Dishwasher at this link: https://www.kijiji.ca/v-view-details.html?adId=1690797041