1.1 This specification covers the construction of standard and custom-built interior steel doors and frames for ships including U.S. Coast Guard certificated vessels.

1.2 Doors and frames are to be hollow metal construction with the door insulated for sound or fire.

1.3 The doors are intended for use in staterooms, lavatories, passageways, and other protected areas.

1.4 Values stated in inch-pound units are to be regarded as the standard.

1.5 The metric equivalents, given in parentheses, are provided for information only.