These five options represent the different designs for this model. Models 7000-7003 are constructed of 1 1/8" frames with 1/8" hardboard mounted on the interior and exterior for a total thickness of 1 3/8"; Model 7004 comes with exterior T1-11 panelling with 1/4" wide grooves vertically spaced either 4" or 8" on center. Onto these sections are mounted 4 7/8" x 1/2" square-edged pine or hemlock that is glued and pinned to the sections to provide the design. Torsion springs, heavy-duty track, hinges and rollers plus 5 interior reinforcing struts round out a very well designed door. These doors are available in a wide variety of sizes to fit your needs. Keep in mind that only the 7001 and 7003 models are offered with glass. Contact us to have a saleman come to your home to discuss your needs.