SeaLux Over Mount 3-Step Folding Telescopic Boarding Ladder 400 lbs. Capacity SeaLux Marine Products.Stainless Steel Over Platform Boarding Ladder max. load capacity 400 lbs. Marine Grade Stainless Steel Tubing. Ladder Folds Onto Swim Platform for Easy Stowing Nylon Bushings Between Ladder Segments Provide An Additional Safety Function To Prevent Accidental Deployment center to center mount holes 10"