3U Brush Panel (model CBP-3): 18-gauge steel frame Snap-in brush strip w/three sided steel frame Black powder coat finish Mounting hardware Whisper Fan Panel: 16-gauge steel panel 19″W x 2″D x 9U Four mounted fans with guards 4.7″ fan diameter 50 cfm airflow rating (per fan) 28 dBA noise rating (per fan) 5.5 watts power required (per fan) 6-ft. green “thermo-cord” with integral thermostat probe to control fan operation – automatically turning on/off when ambient temperature hits pre-set points. Fan activates when temperature reaches 86˚F and deactivate when temperature reaches 72˚F Fan Orientation: Exhaust* (pulls air out) SPEC SHEET: RTB Series EIA/TIA Compliant Certified U.S. Steel