The Dockmate 2-step boat ladder features a contour design that hugs the hull for side boarding. Attaches to floorboards with 3/8" line and swivel snap. Vinyl sleeve will not mar hull fabric. Ladder is constructed from durable 1" diameter anodized aluminum tubing and has comfortable molded poly steps. 250-lb. weight capacity. 17"L x 13-1/2"W.