Access Door Flush Mount Uninsulated Material 14 ga Galvanized Steel Access Door Installation Wall or Ceiling Door Height 18 in Door Width 18 in Rough Opening Height 18 1/2 in Rough Opening Width 18 1/2 in Closure Type Key Operated Cylinder Cam Latch Hinge Type Piano Mounting Hole Size 8 Holes Diameter 1/4 in Finish White Powder Coated Primer Features Medium Security