EVAC+CHAIR 300H Single Person Operation, 400lbs Capacity, Evacuation Chair. Evac Chair 300H Standard Evacuation Chair provides a quick, easy and safe emergency evacuation for people with reduced mobility. . Request a Better Price. Shop EVAC+CHAIRĀ® 300H and Evacuation Chairs. . The EVAC+CHAIRĀ®300H is the original evacuation stair chair, and is designed . Our Price: $1,495.00.