CELLING EXAUST FAN louvre DUCTED WALL MOUNTED RANGE HOOD 16 15 14 13 12 11 10 9 17 18 8 19 7 ROOF 20 6 5 24R x 0.16 23G x 0.28 21 4 22 3 23 2 24 UP ROOF 25 DOWN CELLING EXAUST FAN BATH 70 CFM GYM ROOF ROOF FLOOR A 3 M 0 1 1