The Avante 2x4 is a general lighting luminaire for large spaces including open offices, circulation areas, classrooms, libraries, cafeterias, airport ticketing and wait areas, and numerous other commercial applications. Static or air functions available. Housing is gloss white enamel on cold rolled steel. All edges hemmed or rounded. All shielding pivot on light traps and swing down for easy lamp access. Molded light traps prevent light leaks between shielding and end plates. All air and screw slot units supplied with screw-on tee bar clips. Ballast access is from below. Optics: Twin matte white polyester powder paint finished reflectors provide uniform light distribution. Optimal low brightness diffuse aluminum stepped reflectors available. All diffusers control direct light distribution and glare by shielding lamps from direct view. Metal diffuser staggered round holes (MDR) 52% open perforated metal with .075 diameter holes backed with white acrylic diffuser. Straight blade louver (SBL) sides of perforated metal with staggered round holes and solid blade louvered center. Sides and louver backed with white acrylic diffuser. Metal diffuser aligned mini slots (MDM) 46% open perforated metal backed with white acrylic diffuser. Acrylic diffuser prismatic lens (ADP) extruded acrylic lens backed with white acrylic diffuser. Metal diffuser with center slots (MDC) 52% open metal, .075 diameter holes with 1 wide solid center. Slotted with 1/2 x 2 open slots. Diffuser is backed with white acrylic overlay.