Access Door Flush Mount Uninsulated Material 16 ga Cold Rolled Steel Access Door Installation Wall or Ceiling Door Height 18 in Door Width 18 in Rough Opening Height 18 1/4 in Rough Opening Width 18 1/4 in Closure Type Key Operated Cylinder Cam Latch Hinge Type Hidden Pin Mounting Hole Size 8 Holes Diameter 1/4 in Finish White Powder Coated Primer Features Quick and Easy Installation