Abstract: An astragal used with exterior double door installations, such as french doors. When attached to the edge of the generally inactive door, the astragal provides a door stop for the active door, a seal to prevent intrusion of water, and a lock for the inactive door. The invention particularly pertains to extruded metal astragals capable of increasing the resistance of the double door system to high wind conditions. The astragal comprises a longitudinally extending base member that has at least one longitudinally extending channel and a pair of spaced apart outwardly extending legs. At least one bolt is slidably inserted in the channel adjacent to one of the first and second ends of the channel. The astragal is attached to the door by at least one cleat whose spaced apart arms engage the legs of the base member providing resistance to the astragal rocking in relation to the door edge when the doors are under wind forces.