ARKSEN 12.5-feet Aluminum Ladder EN131 Platform Multi-Purpose Extension Multi-Task Folding Light Weight (2 FREE Plate) Easily converts between twin step ladder, stairway step ladder, extension ladder and two scaffold bases Added hinges automatically lock into position once the ladder is unfolded; Great For attic, library, above ground pool, bunk bed, apartment fire ladder escape, trampoline Maximum Weight Capacity - 330 lbs; Extension length: 12.5ft; Certificated to European Safety Standard EN131 Great For attic, library, above ground pool, bunk bed, apartment fire ladder escape, trampoline; Can be used as single ladder, double sided ladder, trestle, work platform, stair ladder Etc. Fully Folded Up Dimensions: 3 1/4'(L) x 1 /14' (W) x 7/8' (H); Scaffold Height: 4.2ft; A-Type Ladder Height: 5.8 ft; Extension Length: 12.5ft