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 30 in, Door Width 22 in, Rough Opening Height 30 1/4 in, Rough Opening Width 22 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 Primer WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)