The CLTR10U is a 19-inch panel rail system designed for mounting equipment in standard EIA-spaced racks. It consists of a pair of painted thin film black rails with white silkscreened U markings, each measuring 17.53 inches (445 mm) in length and 10U in height. The rails feature tapped 10-32 UNF mounting holes with typical EIA spacing, along with four square holes (0.56 inches [14 mm] diameter) positioned at standard intervals for secure fastening. The mounting surface dimensions are 2.00 inches (51 mm) wide by 1.02 inches (26 mm) deep, with tapped holes spaced 1.12 inches (29 mm) apart. These rails are ideal for professional audio, video, networking, and telecommunications equipment installations where standardized 19-inch rack mounting is required.