Features • Deck and lip operation assisted by balanced spring lifting system • Smooth top plate transition • Comfort grip operating handle • Lifting hole in lip allows for quick and easy handling by installer Structural Integrity • Deck and lip plates made of premium grade 50,000 psi minimum yield diamond tread plate • Heavy-duty 3/8" x 6" (9.65 mm x 152 mm) back beam • One-piece, continuous front and rear hinge pins for enhanced strength and durability • Lip bevel helps protect material handling equipment steering systems and cargo • Two (2) molded rubber bumpers bolted onto heavy-duty steel block extensions, to help protect building and dock from damage