... 1. 2mm b) U 50 x 0. 8, 0. 9, 1. 0, 1. 2mm c) U 60 x 1. 0, 1. 2mm ... 2) Covering channel: a) C 50 x 0. 35, 0. 38, 0 ... 0. 43, 0. 45, 0. 48, 0. 50mm b) C 60 x 0. 60mm Drywall metal studs: 1) Horizontal channel: a) U ... 45, 0. 50, 0. 60, 0. 70mm b) U 100 x 0. 60, 0. 70mm c) U 150 x 0. 80, 1. 00mm2) ... 0. 80mm b) C 100 x 0. 57, 0. 60, 0. 70, 0. 80mm c) C 150 x 0. 80, 1. 00mmCeiling ...