In the construction industry, a Galvanized Iron (GI) main channel is a building material that is frequently utilized in suspended ceiling systems.

• Material: Galvanized iron, or steel or iron coated in a layer of zinc to prevent corrosion, is usually used to make the main channel. Rust resistance and durability are provided through the galvanization process.
• Application: GI Main Channels are essential parts of suspended ceiling construction. They support the entire ceiling grid system by acting as the main structural components that cross the ceiling horizontally.
• Ceiling Grid System: In a suspended ceiling system, hangers are used to connect the main horizontally installed channels to the building's framework. The ceiling tiles and other elements of the ceiling system are supported by the framework that these channels create.
• GI is the standard size. Main Channels are available in standard sizes, though their exact measurements may change according to the manufacturer's specifications and the particular demands of the ceiling design.
• Galvanized Coating: The main channel's galvanized coating keeps it from corroding and makes it appropriate for settings where exposure to moisture is a risk. This is particularly crucial in places like restrooms and kitchens.
• Installation: To install a GI Main Channel, hangers are used to fasten it to the ceiling structure. After that, cross tees are hung from the main channel to create a grid pattern. A finished ceiling is produced by arranging ceiling tiles inside the grid.