It features 15-Inch x 15-Inch x 9-9/32-Inch sized galvanized steel housing with rust-proof paint for added safety. Totally enclosed condenser motor continuously and safely runs for long life. It has voltage rating of 120-Volts, current rating of 0.34-Amp and power rating of 42-Watts at 60-Hz. It delivers airflow up to 190 CFM at 0.1-Inch static pressure and 145 CFM at 0.25-Inch static pressure. Ventilation fan uses 6-Inch ducts. This 15-Inch square poly pro grille in contemporary design, works with any decor. Fan comes with 12-3/16-Inch square mounting opening. It has energy efficiency of 4.6 CFM/Watt. Ventilation fan is UL listed, Energy Star/LEED certified, California Title 24 accepted, Washington VIAQ qualified and meets ASHRAE 62.2 standards.