"Fire Rated Access Door, Flush Mount, Insulated, Material 20 ga Galvanized Steel Door; 16 ga Cold Rolled Steel Frame, Access Door Installation Wall or Ceiling, Door Height 24 in, Door Width 24 in, Rough Opening Height 24 1/4 in, Rough Opening Width 24 1/4 in, Closure Type Self-Latching Tool Key and Ring Operated Slam Latch, Hinge Type Piano, Mounting Hole Size 8 Holes Diameter 1/4 in, Finish White Powder Coated PrimerFeaturesRough Opening Height: 24 1/4 inClosure Type: Self-Latching Tool Key and Ring Operated Slam LatchMaterial: 20 ga Galvanized Steel Door; 16 ga Cold Rolled Steel FrameAccess Door Installation: Wall or CeilingDoor Height: 24 inInsulated / Uninsulated: InsulatedFlush Mount/Recessed Mount: Flush MountHinge Type: PianoRough Opening Width: 24 1/4 inFinish: White Powder Coated PrimerFeatures: Fire Rating of 1 1/2 hr in Walls, 3 hr in Noncombustible Ceilings, and 1 hr in Combustible Ceilings.Mounting Hole Size: 8 Holes Diameter 1/4 inItem: Fire Rated Access DoorDoor Width: 24 in"