Angle, height, depth, width, rotation adjustable for precise orientation. Width adjustable to fit chairs 1 inch narrower or up to 2 inch wider than back model widths. Carbon Fiber Fixed mount is lightweight, carbon fiber construction, maximum performance for rigid chairs. Please allow up to 4 weeks for delivery from Invacare. For faster assistance, feel free to contact Motion Concepts directly at 1-888-433-6818.