Patent attributes
A boxed header is formed from an exterior side plate, an interior side plate, a top plate, a bottom plate, a first end plate and a second end plate. The top plate is connected to the exterior side plate and the interior side plate with welded joints that are formed at the juncture between J-beveled top edges on the exterior side plate and the interior side plate that support the weight of the top plate during assembly. Once the top plate has been secured, the boxed header can be rotated and the bottom plate is attached to the exterior side plate and the interior side plate with welded joints that are formed at the juncture between J-beveled bottom edges on the exterior side plate and the interior side plate that support the weight of the bottom plate during assembly.
