Transfer Grilles

Are transfer grilles allowed in a hospital?

Transfer grilles in new and existing health care occupancies, regardless of whether they are protected by fusible link-operated dampers, are not permitted in corridor walls and doors. However, there are exceptions for sink closets, bathrooms, and toilet rooms which may have doors equipped with a fixed grille or louver to allow exhaust air to be “made up” from the corridor. Where a door to any of these rooms is equipped with a grille or louver, such spaces are not permitted to be used for storage of flammable or combustible materials. Caution must be exercised when using this exception for sink closets because they are often used for storage of combustibles.