Cast Iron Stove Kitchen Flange Oven Rings BBQ Grill Barbecue Cooking Heavy Duty. Cast Iron Stove Kitchen Flange Oven Rings BBQ Grill Barbecue Cooking Heavy. Plate dimensions: – External – 410×710 mm. (For rings) – 265 mm. (Under the rings) – 225mm. (Under the rings) – 210 mm. (Under the rings) – 170mm. Ring size: – External – 260 – 205 – 150 – 95mm. External – 205 mm. View My Other Items For Sale. Thank you for visiting! Get images that make Supersized seem small. Showcase your items with Auctiva’s. Track Page Views With.