What is the size of metal carrying channel?

The size of a metal carrying channel, often used in suspended ceiling systems, can vary depending on the specific application and the manufacturer's specifications. However, some common sizes include:

Common Dimensions:
Width: Typically ranges from 38 mm (about 1.5 inches) to 75 mm (about 3 inches).
Height: Generally ranges from 10 mm (about 0.4 inches) to 25 mm (about 1 inch).
Thickness: Usually between 0.45 mm (18 gauge) and 1.2 mm (16 gauge).
Standard Sizes:
38 mm x 12 mm (1.5 inches x 0.5 inches)
50 mm x 19 mm (2 inches x 0.75 inches)
64 mm x 19 mm (2.5 inches x 0.75 inches)
75 mm x 25 mm (3 inches x 1 inch)
These channels are used to support ceiling grids and are often placed perpendicular to furring channels in a suspended ceiling system. The exact size required can depend on the load it needs to carry, the span between supports, and local building codes.