I have three of these chairs available which came from a clear-out. This sale for chair shown

Ensure a safe and comfortable evacuation for a mobility-impaired person from your premises with the Evac+Chair evacuation chair. Suitable for evacuating any passenger build, this chair has a payload capacity of 160kg 

This model features a unique friction belt system and help to control the smoothness and speed of descent with a self-braking track. Ideal therefore, to evacuate someone down flights of stairs safely in an emergency when a lift should not be used. Two person operation for stability is advised. Businesses are equipping themselves with evacuation chairs so that they can assist visitors and customers as well as employees if the need arises.

To help you use the evacuation chair, thas a double handed grip and ergonomic handle. You can secure your passenger in place with both the sewn-in safety belt and the foot strap. If you need to travel over uneven terrain, the large 100 mm castor wheels will be just the job.

Having been assessed to meet high safety, health and environmental protection requirements for the European Economic Area, this product holds the CE Mark.