Cast Iron Furnace Fire Door Clay Bread Oven Doors Pizza Stove Fireplace Grill. Furnace Door Iron Arched Vintage Fireplace Stove Fire Smoke High Quality? Covered with refractory paint + 800C. Material: gray cast iron MID 20. Please see pictures for all dimensions. 165×265 Internal size, mm. 110×210 Model size, mm. 130×225 Material – serial cast iron SCH 20 Product color – black Poland. Get images that make Supersized seem small. Showcase your items with Auctiva’s. Track Page Views With.