SR-W35 1. Outside: steel coating. 2. Inside: monobloc steel structure, hand welded, heat-resistant up to 1200 degree. 3. Door: carbon steel, high temperature resistant, with glass-ceramic. 4.Removable ash box: it collects the ash fallen through the holes in the brazier. 5. Glass-self cleaning: designing wind to blow ash from the glass keeps the glass always cleaning.