Abstract: An astragal formed as a part of an extruded door sash is described. The astragal is formed integral with the door sash as an elongated forwardly projecting member constituting an astragal base. An elongated detachable cap is releasably secured to the base member and extends forwardly thereof. A core member is disposed internally of the door sash and projects along the outer end edge portion of the sash and at least in part within the astragal. The astragal base member and the door sash form a unitary member.

Abstract: A modular anti-warping door panel for use in the construction of a door or door panels. The door panel comprises a rigid reinforcing frame constructed of material resistant to warping. The reinforcing frame is defined by two spaced apart elongated rigid members and one or more transverse spaced members. The reinforcing frame is retained in an elongated butte stile and a lock stile and a top and bottom rail. The stiles and rails are formed as hollow members of rectangular cross-section forming a peripheral panel frame. The two elongated rigid members are retained along an inner peripheral channel of the rectangular door frame. Panels are retained in an opening defined by the inner peripheral channel. A rigid post is secured in the butte and lock stiles along an outer edge portion thereof and concealed within the hollow stiles.