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 Primer