Patent ID: 9518422
Filing Date: 2016-12-13
CPC Classification: E06B

Claim Text:
1. A fire door stop system used with a fire door assembly that includes a fire door and a fire door frame having a soffit that forms an overlap surface between the fire door and the fire door frame, the fire door stop system configured to remedy non-compliant clearances between the fire door and fire door frame that are not compliant with fire safety standards comprising: a profile strip that is configured to be fastenable to the soffit; and a first seal consisting of an intumescent material sealer to form a first intumescent seal; wherein the profile strip has a first flange that, when fastened to the soffit, extends outward from the soffit so as to form an extended overlap surface between the fire door and the fire door frame, the first flange having a first face surface that faces the fire door; and wherein the first intumescent seal is affixed to the first face surface of the first flange so as to forma first seal against the fire door under non-fire conditions when the fire door is closed.