ERT - 15BSF 1.5KW/ 3~4평 1290Kcal/h 160*500*670mm   ERT - 20BSF 2.0KW/ 4~6평 1720Kcal/h 160*600*670mm   ERT - 25BSF 2.5KW/ 5~7평 2150Kcal/h 160*700*670mm             ERT - 30BSF 3.0KW/ 6~8평 2580Kcal/h 160*800*670mm