MODEL: TLB-16E AWARD: Taiwan excellence award 2016 / 2016 Gold design Award The outlook is elegant, and has multi-functions. It can be used as stairway, 90° ladder, A frame ladder, extension ladder...etc. The most important is “4 sets impendent extension leg”, the equipment is setting into ladder inside. No need for extra pcs to extend the leg. Product also passed GS (150 kgs loading rate) certificate approval.