Tjernlund RT750 8" Rooftop Exhaust Fan, 800 cfm
Increase fireplace draft to eliminate fire starting problems, smoky back-ups and problems like small, short or offset flues and structures under negative pressure.
Performance: 800 CFM;
Max Face Area: 14 sq. ft.;
Frequency of Rotations: 1550 RPM;
Power Rating: 1/2 HP (0.373 kW);
Temperature Rating: 1000-F;
Dimensions: (W x W & L): 17-1/2' x 16' (445mm x 406mm).