Anchor/profile rail model 2991, C-profile, perforated. Matching U-clamps (BU... and BUK...). Please observe additional regulations for use in functional maintenance! Dimensions (approx. dimensions) H x W x D: 26 x 48 x 2.5 mm Slot width: 22 mm Profile perforation: 11.5 x 30 mm Center distance: 50 mm Delivery length L: 400 mm Material: Steel, hot-dip galvanized in accordance with DIN EN ISO 1461