The double-sided 3.5" thick closed cell rubber backboard padding is designed for boards with 1 1/2" channel widths as commonly seen with fiberglass, steel and wood boards. Pads extend 18" up on each side of the backboard. Mitered corners for an exact fit. Attached to a backboard with the included adhesive. Meets all mandatory NCAA and high school specifications. Adhesive, applicator and instructions are included. Pads sold in pairs, enough to pad 2 backboards. For indoor use only.