BMW E46; 3-Series (323, 325, 330, M3, etc.) Top w/Heater-Defroster Glass Window. Made with OEM style molded plastic retainer to install rear of top to body. Window heat-sealed into top, No black bezel around glass. Top fits to original headliner using unique system of brackets into which headliner hooks attach. U.S. Patents 7,051,413 and 7,069,633. Twillfast 100% acrylic twill weave cloth laminated to polyester/cotton blend dobby backing.