The DUELING® 2 Back to Back® Inflatable Waterslide with its 4 in 1 Action is like your own Water Park in your back yard! Make sure you have room for this Monster, it is a 39 FOOT LONG unit. Double Slides are back to back. You have a Water Slide and a Rock Wall on each side. Two kids can slide on 2 different slides at once. Huge 39x16.1x10.5 Feet Tall! This Unit is rated for Residential use only. Handles up to 4 Users at once. Weight Capacity is 400lb's overall.