... ) C 50 x 0. 35, 0. 38, 0. 40, 0. 43, 0. 45, 0. 48, 0. 50mm b) C 60 x 0 ... channel: a) U 75 x 0. 31, 0. 35, 0. 40, 0. 45, 0. 50, 0. 60, 0. 70mm b) U 100 ... channel: a) C 75 x 0. 31, 0. 35, 0. 40, 0. 45, 0. 50, 0. 57, 0. 60, 0. 70, 0 ... ) Wall angle: 24 x 24mm, 23 x 23mm We also supply specail fibre board to match this frame.The length can ...