What is the difference between face welding and a full profile weld?

Face welding is weld applied only to the face of the frame, usually at the 45 degree joint. The full profile weld is applied to the full contour of the frame at the intersection of the head and the jambs. Since most manufacturers can fire rate their frames knocked down (in 3 pieces), welding is not required and is usually for cosmetic appearance and ease of installation. Since the frame throat is sheltered by a wall on all sides, full profile welding is usually not required.

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