1.This Aluminum Stair Chair is designed to help EMTs transport patients through tight spaces and up or down stairs, safely and efficiently. 2.The sturdy aluminum frame is strong enough to hold up to 400 pounds, yet surprisingly lightweight. 3.Two adjustable straps with quick-release buckles ensure the patient's comfort and safety. 4.Non-slip grips on the rear and front handles help rescuers maneuver the Aluminum Stair Chair easily. 5.Compact folding allows you to stow the stair chair in the ambulance without taking up a lot of space. Dimensions: Height: 36” (91cm) Width: 20” (51cm) Depth: Open: 27” (69cm) - Folded: 7 7/8” (22cm) Weight: 21 lbs. (9.5kg) Load Capacity: 400 lbs. (169kg)