Features: Size (W x H): 914 x 1,700mm Size of ladder frame (W x H): 474 x 1,252mm Outer diameter of main tube: 42mm Outer diameter of lesser tube: 26mm Thickness of main tube: 2.2 mm Thickness of lesser tube: 1.8mm Hole diameter/quantity: 10mm x 4 Upper hole and lower hole: 80mm Hole space between 1,540mm Upper locating pin: 150mm Lower locating pin: 350mm Locating pin space between 1,200mm Steel grade of main tube: Q235 Material: high frequency welding tube