Backed by industry guidelines, the iRise steps provide safe, sturdy and ergonomic support for children to help them reach more of the interactive whiteboard. iRise is constructed using Baltic Birch plywood that stands up to daily use. Deluxe models feature additional classroom storage area underneath the carpeted top. Included handrail for easy access and safety. 109 lbs. 31.5″ High x 73.5″ Wide x 21″ Deep. Lifetime warranty.