grate ceiling
3. Easy Operation Fire-rated access hatches are designed to allow for ease of access for maintenance personnel. They often feature mechanical or hydraulic opening mechanisms that can be operated quickly and efficiently, even in emergency situations.
fire rated ceiling access hatch

Grid ceilings, also known as suspended ceilings or drop ceilings, consist of a framework of metal grids that hold acoustic tiles or gypsum boards. This system allows for easy access to the space above the ceiling, making maintenance and repairs more manageable. The grid structure creates a void between the ceiling and the actual overhead space, which can accommodate electrical wires, plumbing, and HVAC ducts.
gypsum and grid ceiling
