In-line Duct Fan Heater Airflow @ 0.000 in SP 130 cfm Duct Diameter 6 in Heating Capacity 1707 BtuH 3413 BtuH Motor Output Power 500 W 1 000 W Motor IP Rating None Nameplate Voltage 120V AC Overall Height 8 3/8 in Overall Length 10.5 in Application General Purpose High-Efficiency Motor No Speed Controllable No Housing Material Galvanized Steel Motor Speed 1 400 RPM Airflow @ Static Pressure 40 cfm @ 0.125 in SP 90 cfm @ 0.100 in SP Control Voltage 120 V Current 8.33/4.17 A