Aluminum U-Channel 1 inch Deep x 5/8 inch Width 12ft LengthU Channel 1in x 5 8 in Width 12ft Length Deep 1" Height x 5 8" Width Aluminum Extrusion for various applications. Can be used to secure wall of glass wood, Cover the glass for stairs, etc, Used in For Residential and Commercial Sites. Use With 3 8" 1 2" Tempered Glass Can be used on all sides of wall. No Use of Rubber Required For 1 2 inch glass application