Patent ID: 11873679
Assignee: NATIONAL GUARD PRODUCTS, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A system, comprising:
a first component installed on a first side of a fire door, wherein the first component comprises:
a vertical portion for mounting onto an outer surface of the first side of the fire door, and
a horizontal portion inserted into a first gap between a top edge of the fire door and a door frame above the fire door or a second gap between a bottom edge of the fire door and a floor surface;

a second component installed on a second side of the fire door; and
at least one intumescent strip seal fitted on the horizontal portion of the first component,
wherein the at least one intumescent strip seal expands when exposed to high heat of a fire to fill at least a portion of the first gap or the second gap without causing movement of the first component,
wherein, when the horizontal portion of the first component is inserted into the second gap, the at least one intumescent strip seal is fitted on a top side of the horizontal portion of the first component, such that the at least one intumescent strip seal expands upward when exposed to the high heat of the fire to fill space between the top side of the horizontal portion of the first component and the bottom edge of the fire door.