Flush mounting, molded low profile hatch is fully gasketed with UV stabilized resin and non-skid surface. Comes with "T" handles for easy operation and stainless steel hinge pins. ID 9-3/4" x 19-1/2" OD 13-3/4" x 23-1/2" Cut Out 12-1/8" x 21-1/8" Color Off-White