PANASONIC FV20NLF1/VENT.FAN/240CF/57.2WATTS Air Volume (CFM) 258 at 0.0" static pressure, 240 at 0.2" static pressure, and 200 at 0.4" static pressure Noise (sones) 1.4 Power Consumption (Watts) 57 Energy Efficiency (CFMs/Watt) 4.2 Speed (RPM) 1260 Current (Amps) 0.46 Thermal Fuse Protection Yes Duct Diameter (inches) 6" Super Quiet Operation Yes Totally Enclosed Condenser Motor Yes, for long life - Rated for continuous run Insulated Housing Yes, to prevent condensation and noise Tapered Duct Adaptor for easy connection Yes 5 Positions for Installation Yes Joint or Truss Attachment Brackets Included Yes Suspension Brackets Included Yes Grille Low profile family design Adjustable Airflow for Multi-Inlet Balance Yes Galvanized Steel for Long Life Yes Weight 17 lbs