Three shapes through the strong joint,Website:http://www.ladderkingdom.com,easy to operate,suitable for different use.Manufactured to European Standard EN131 (Trade & DIY use) for your reassurance and safety'One by one' rung extension and locking Model Number: AL-019-3P (3.85m)Certification: EN131Material: AluminiumWeight limit: 150 kg (23.5 stone/330 lbs)Opened Size: 3.85 m(12.63Ft)Closed size: 92 cm H(36.22")A type height: 1.9 m(6.23")Cushion thickness: 0.50cmNet Weight: 14.5 kg ( 31.97 lbs )Gross Weight: 16 kg ( 35.27 lbs )Package Style: Double corregated brown boxPackage Size: 95x16x48/1pcContainer Volume (20'/40'/40'HQ): 390/780/940 pcs