Door and jamb construction

Claim 1

A DOOR JAMB WHICH COMPRISES: (A) A BUILDING PANEL HAVING A DOOR OPENING FORMED THEREIN; (B) A STRUCTURAL SHAPE BOUNDING EDGES OF SAID DOOR OPENING, SAID STRUCTURAL SHAPES EACH BEING SECURED TO SAID BUILDING PANEL AND EACH INCLUDING; (C) FIRST AND SECOND SIDE WALLS OF UNEQUAL LENGTH LOCATED PARALLEL TO ONE ANOTHER, EACH OF SAID SIDE WALLS HAVING A FRONT AND A REAR END, EACH SAID REAR END INCLUDING A POSITIONING WALL RECESSED FROM THE BALANCE OF SAID SIDE WALL, ENGAGING SAID PANEL AND DEFINING WITH SAID PANEL A LONGITUDINAL RECESS, A SEALING STRIP BEING POSITIONED IN SAID RECESS; (D) FIRST AND SECOND CROSS WALLS EXTENDING INWARD FROM THE FRONT ENDS OF SAID FIRST AND SECOND SIDE WALLS AND GENERALLY PARALLEL TO ONE ANOTHER; (E) CONNECTING WALL MEANS CONNECTING THE EXTREMITIES OF SAID CROSS WALLS REMOTE FROM SAID SIDE WALLS AND DISPOSED PARALLEL TO SAID SIDE WALLS; (F) A SEPARATE WALL PARALLEL TO AND SPACED FROM SAID CONNECTING WALL AND EXTENDING FROM ONE OF SAID CROSS WALLS AWAY FROM THE EDGE OF THE DOOR OPENING TO DEFINE A GROOVE WITH SAID LAST-MENTIONED CROSS WALL AND SAID CONNECTING WALL; (G) SEALING MEMBER MEANS POSITIONED WITHIN SAID GROOVE MEANS SO AS TO EXTEND THEREFROM AND CONTACT A CROSS WALL OF A SIMILAR STRUCTURAL SHAPE UPON A DOOR WHEN SUCH DOOR IS DISPOSED WITHIN SAID DOOR JAMB IN A CLOSED RELATION; AND (H) POSITIONING MEANS EXTENDING FROM SAID LAST-MENTIONED CROSS WALL OPPOSITE SAID CONNECTING WALL AND SAID SEPARATE WALL TO CONTACT THE EDGE OF THE DOOR OPENING.