Description Manufacturer part #:23.12H Technical Description Features American Metric Anodized Aluminum Track 0.866/142 in 22 mm Length 78 in 2 mm Width 7/8 in 22 mm Height 5/16 in 8 mm Thickness 1/8 in 3.3 mm Base Width 3/8 in 10 mm Hole Diameter 3/16 in 5 mm Hole Spacing 3 15/16 in 100 mm