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A fire-rated ceiling access panel is designed to provide access to the spaces above the ceiling, such as electrical conduits, plumbing, and HVAC systems, while maintaining the integrity of fire-rated ceilings. The 12x12 dimension refers to the size of the panel, which allows for adequate access without compromising structural design. Fire-rated access panels are constructed with materials that have been tested for their ability to resist the spread of fire, typically rated for between 30 to 90 minutes, depending on building codes and specific needs.
Types of Ceiling Hatch Covers
ceiling hatch cover

Environmental Considerations
Conclusion