Branddörrramar

Frames used in masonry walls may be used with a maximum 3-hourfire door, while frames used in drywall stud walls are intended to beused with a maximum 1-1/2-hour fire door.• Consult with individual fire door frame manufacturers listings for firedoor frames that can be used in drywall stud walls with a maximum 3-hour Betyg. • Injektering krävs inte för brandklassade ramar installerade i antingen gipsväggens ormasonry väggar vid valfri timme.