Suitable for heights up to 3m (9ft 10in) Spring assisted Easy Stow system gives total control when lowering or stowing the loft ladder In-loft handrail for added safety when entering or leaving the loft Floor Thickness/Minimum Loft Opening Length 7.6cm (3in)/0.40m (1ft 4in); 10.2cm (4in)/0.41m (1ft 4in); 12.7cm (5in)/0.43m (1ft 5in); 15.3cm (6in)/0.44m (1ft 5in); 17.8cm (7in)/0.45m (1ft 6in); 20.3cm (8in)/0.46m (1ft 6in), Weight: 15.211896078 pounds, Manufacturer: WernerCo