Red Seal Lather (Interior Systems Mechanic) Practice Exam 2026 – All-in-One Comprehensive Study Guide for Exam Success!

Question: 1 / 400

When installing a suspended ceiling, what is the purpose of the main runner?

To provide aesthetic appeal

To support the cross tees and ceiling tiles

The main runner in a suspended ceiling system plays a critical structural role. It is specifically designed to support the cross tees, which are subsequently used to hold the ceiling tiles in place. By providing a central framework, the main runner ensures that the ceiling is stable and well-aligned, distributing the weight of the tiles evenly across the structure. This helps maintain the integrity of the ceiling and prevents sagging or shifting over time.

Additionally, while other elements such as aesthetic appeal, sound absorption, and electrical wiring can be factors within the broader context of ceiling design and installation, they are not the primary function of the main runner itself. Instead, the main runner’s main purpose is to provide essential support for the ceiling structure, ensuring it is durable and effective.

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To enhance sound absorption

To facilitate electrical wiring

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