Automatically locks into stowed position -. to release press locking button on lower left rung. Fiberglass platform. Includes ladder and hardware for both outboard and. inboard/outboard applications. Telescoping. Maintenance-free high strength platform. Black plastic treads provide a secure stepping area. All stainless steel hardware included. 300 lb. Capacity. Platform: 14" L x 18" W. Ladder Measurements. 3 Step: Length deployed: 35". Length stowed: 15".. Overall Width: 11.75". Step Tread: 7.25" x 1.5"