U1 Shelf Height: 1 3/4"H (1U Space) These easy-to-install shelves fit all components up to 17 3/8" wide to quickly meet all of your rackmounting needs. Constructed of 16-gauge steel, each unit is individually boxed. Features: -Rackshelves fit all components up to 17 3/8"W -16-gauge steel construction -Boxed individually U Series Shelves Specifications Racking height Depth Capacity 1 3/4" (1U space) 11" 35 lbs. 3 1/2" (2U space) 14 3/4" 50 lbs. 5 1/4" (3U space) 14 3/4" 70 lbs. 7" (4U space) 15 1/2" 85 lbs.