The distance between the foot line of L-shaped wall and top surface of sidewall is short, which allows thinner batch feeding so that the batch can be melted more easily. It can also reduce fire and batch running at the charge end and hence energy can be saved and environment improved.With its high reliability and long service life span, the L-shaped suspended back wall serves as one of the essential measures for prolonging the whole furnace life. Main Technical Index: 1. Modulus width of suspended wall: 300mm; 2. Width of brick structure: 380mm; 3. Length of nose zone (doghouse): 1700-2300mm; 4. Service life: more than 10 years.