Transparent tray is ideal for clients with visual perception problems. The See-Thru Work Tray attaches to all types of wheelchairs and is made of strong, clear polycarbonate for a clear line of sight to lap and legs. Features hook and loop straps that attach onto wheelchair armrests. This durable tray has an all-aluminium lip that keeps items from falling off. Tray measures 6.4mm ( Qr "") thick. Width 609mm (24"") Length 495mm (19 Qw "") Cut out Width 381mm (5"") Length 177mm (7"").