Material # Width, mm (in) Weight, kg (lbs) Pack Zinc plated 11 494 00 2876 (113.23) 6.2 (13.89) 1 50 024 59 2120 (83.46) 4.8 (10.6) 1 50 024 53 1920 (75.6) 4.2 (9.3) 1 50 024 58 1000 (39.37) 2.2 (4.9) 1 50 024 57 920 (36.22) 2.0 (4.4) 1 50 024 56 800 (31.5) 1.8 (3.97) 1 50 024 52 720 (28.35) 1.6 (3.5) 1 50 024 55 600 (23.62) 1.4 (3.1) 1 50 024 54 520 (20.47) 1.2 (2.6) 1 50 024 51 480 (18.9) 1.1 (2.4) 1 50 024 50 400 (15.75) 1.98 (0.9) 1 U-bar is used as a support structure. It may also be "boxed" in pairs to provide additional strength and stability. May also be used to accept B9 Brackets at 90°. Sheet thickness 3 mm (0.12”). Hole diameter 8.5 mm (0.33”). Distance between holes 40 mm (1.57”).