This requires the occupants of both rooms to unlock their door to allow access between the rooms.
Adjoining room door lock.
Sound control system for communicating adjoining doors this system is designed to create a sound control on a pair of communicating internally adjoining doors.
Since a high sound control is vital for communicating doors this system is specifically comprised of products that reduce sound transfer.
When the rooms are occupied by separate groups the doors can be locked to maintain security and privacy.
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For security purposes communicating doors between hotel rooms typically have a single sided deadbolt with a thumbturn on the room side and a blank plate on the side facing the other communicating door.
Connecting doors also known as communicating doors are often used between adjoining rooms in hotels or cruise ships.