"Mechanical dock leveler features a smooth, pull-chain operation. Dimensions L x W ft. 8 ft. 4 in. x 7 ft. overall w/lip, Common Usage Mechanical dock leveler, Material Type Steel, Height Difference in. 12, Electrician Required No, Includes 2 Laminated bumpers and telescopic steel toe guards on both sides, ANSI Approved Yes, Hydraulic No, Capacity lbs. 25,000, OSHA Approved Yes, Platform Size L x W in. 100 x 84, Quick Stop System No. Smooth, pull-chain operation All heavy-duty construction features 1/4in. checkered plate deck 55,000 PSI steel 6in. structural steel support understructure 16in. long lip Service range 12in. above and below dock"