ButlerBuilt Dual Hose Black Duct - 10.5" x 9.0" x 4.5" 500020155 The current generation of Bell

The current generation of Bell Racing helmets combines leading-edge technology

5 in Center Inlet

1955-1967 Cadillac DeVille

1964-1978 Buick Riviera

ButlerBuilt Dual Hose Black Duct - 10.5" x 9.0" x 4.5" 500020155 The current generation of BellButler Built Air Ducts are used by many top NASCAR competitors. Computer aided design (CAD) provides optimum aerodynamic shape for smooth uninterrupted air flow. The NACA ducts can be installed in side windows or body panels to direct cool outside air to brakes, oil coolers or cockpit. (Uses 3" hose.) Racers have chosen BUTLERBuilt Professional Seat Systems for their seating needs for decades. BUTLERBuilt has always been proactive in their approach to