drywall grid system cost
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Fire-rated ceiling access doors are specially designed access points installed in ceilings that are required to have fire-resistance ratings, typically measured in hours. These doors provide a means of access to spaces above the ceiling, such as plenum areas, where mechanical, electrical, or plumbing systems may be installed. The fire-rated designation means that these doors have been tested to resist the passage of flames and smoke for a specified amount of time, which is crucial during a fire emergency.