Patent ID: 7921603

Claim:
A fire-resistant jamb system comprising a wall having an opening, a fire-resistant jamb assembly including a hinge leg, a strike leg and a header, the header having a first end and a second end, the hinge leg being connected to the first end of the header, and the strike leg being connected to the second end of the header, the fire-resistant jamb assembly being dimensioned for installation in the opening of the wall, a door dimensioned for installation in the fire resistant jamb assembly, each of the legs and header of the jamb assembly including a base portion comprised of fire-resistant material and a stop portion for contacting the door when the door is closed within the fire-resistant jamb assembly, a first intumescent strip and a second intumescent strip running substantially the entire length of the base portion of the hinge leg, the first and second intumescent strips being positioned on opposite sides of the base portion of the hinge leg and between the door and the wall when the fire-resistant jamb assembly is installed in the wall opening and the door is closed within the jamb assembly, and a bracket system for securing the legs and header in the wall opening including at least one L-shaped fixed bracket configured to secure the hinge leg to the wall, the L-shaped fixed bracket wrapping around a corner of the wall, and having a first expanse parallel with the first and second intumescent strips, and a second expanse perpendicular to the first expanse and fastened to an outer surface of the wall, a hinge aligned with the L-shaped fixed bracket, for pivotally connecting the door to the hinge leg of the jamb assembly, and one or more hinge screws penetrating the hinge, the first intumescent strip, the base portion of the hinge leg, the L-shaped fixed bracket, and the wall.