Anchor/profile rail model 2991, C-profile, unperforated. Matching U-clamps (BU... and BUK...). Dimensions (approx. dimensions) H x W x D: 26 x 48 x 2.5 mm Slot width: 22 mm Delivery length L: 4000 mm Material: Steel, galvanized according to DIN EN ISO 2081, thick-layer passivated