The Clear Flip Away Wheelchair Armrest Tray is made of sturdy, transparent polycarbonate for a clear line of sight to lap and legs. This half lap tray pivots upward for easy entry and exit from the wheelchair. The Clear Flip Away Wheelchair Tray measures is made of 3/8 inch thick clear polycarbonate. This standard half tray provides a larger work surface with an angled outer edge. The wider design provides more tray area toward the center. The tray measures 22 inches long, 8 inches wide at elbow and 9 ½ inches at front edge. The tray attaches to the wheelchair armrest with an adjustable bracket. The Adjustable Height Channel Armrest Bracket measures 2 inches wide, 9 inches long, 1 inch high, and accommodates maximum arm pad size 1 ½ inches high, 2 ½ inches wide. The Clear Flip Away Wheelchair Armrest Tray is virtually unbreakable and scratch-resistant. The tray slides on from the front, and then flips up and out to the side for easy transfer. Choose from Left or Right.The tray includes a pre-installed Adjustable Height Channel Bracket. Steel Channel Bracket Attachments for Jazzy, Permobil, or Invacare wheelchairs are available by special order. Clear Flip Away Wheelchair Tray Product Instructions Adjustable Height Channel Bracket Instructions Clear Flip Away Wheelchair Tray Specifications: Measures: 3/8 inch thick, 22 inches long, 8 inches wide at elbow and 9 ½ inches wide at front edge. Armrest bracket measures: 2 inches wide, 9 inches long, 1 inch thick. Accommodates maximum arm pad size: 1 ½ inches high, 2 ½ inches wide.