This item is currently out of stock.
A sagging slide-out puts constant stress on the extension tubes and seals. Ultra-Fab's QS slide-out support props the room up from underneath, and its push-button, handle-free design means you can't crank it down too hard and cause damage the way you can with threaded jack-style supports.
Ultra-Fab makes this support in three overlapping length ranges, so measure your slide-out's height before ordering to make sure the 26in-47in range is the right one for your rig.