Available platform size 2'x2' to 2'x4' Available Ladder heights on top platform below 3 ft. 10' to 17 ft. 12' to 21 ft. 14' to 25 ft. 16' to 29 ft. 18' to 33 ft. 20' to 37 ft. 24' to 40 ft. 24' to 44 ft. 18' to 47 ft. 20' to 50 ft. 24' to 60 ft. 24' to 65 ft.