Here's the ultimate set of ramps for both performance and convenience. The arched design will take care of low clearance needs - the folding feature provides storage in the smallest space of any loading ramp on the market. Capacity: 750 lbs. /panel 1500 lbs. /pair. Size: 12"x89", Stacked Thickness: 13", Rungs/Panel: 17, Rung Length: 10", Rung Spacing: 4"