Optimized for T8 technology, P4D provides maximum value and performance in a low-profile design. Mounting options include recessed, surface or cable for maximum versatility. Nominal 3" deep louver. Black reveal with full air handling capabilities. Matte anodized low iridescent, semi-specular (MA) louver finish virtually eliminates visibility of fingerprints and construction dust. Shallow housing height. Recessed, surface or cable mount.