A method of manufacture of a brick molding system for window frames and door frames includes providing a frame member which is used to form a frame to accommodate a variety of styles of window or doors in accordance with customer requirements. The frame member has a female brick molding attachment receptacle. A plurality of brick molding variations is provided, all of which have a male coupling engageable with the female brick molding receptacle. An order is received from a customer for a selected style of frame with a selected style of brick molding. Lengths of the frame member are secured together to form the selected style of frame and in the process of forming the frame the male coupling of the selected style of brick molding is inserted into the female brick molding receptacle.