The Amana Tool® divided light entry door sets enable you to make strong, attractive divided light doors with real mortise-and-tenon joints. The first bit shapes the decorative sticking along with a rabbet for the glass. The second bit cuts the cope and the tenon. Once assembled, all of the door frame parts, stiles, rails, muntins and mullions, interlock with 3/4" long tenons.
If you've wanted to construct true divided light doors for fine furniture and cabinets, look no further. Mullions are 3/4" wide.