Screw head plate, head plate with welded U-profile perforated on one side, for mounting on horizontal ceilings, including hot-dip galvanized fastening accessories. for profile: U 4530/... FL Dimensions (approx. dimensions) Head plate L x W x D: 130 x 40 x 5 mm Fastening holes: 11 x 20 mm Center distance: 100 mm Head plate holes, center: 11 x 20 mm 15 mm from the side edge One-sided profile holes, single row: ¿ 12 mm Center distance: 50 mm Total length L: 105 mm Material: Steel, hot-dip galvanized in accordance with DIN EN ISO 1461