The RSD high temperature exhaust fan maintains the necessary draft for all high temperature chimney, flue, and grease duct applications up to 2100 CFM. This fan is UL and ULC listed for all gas, liquid, or solid fuel burning fireplaces, ovens, cooking appliances, and domestic heating appliances, up to 1000ᵒF continuous, 1400ᵒF abnormal. The RSD housing and impeller is constructed of 316L stainless steel, which helps prevent corrosion from the elements. The tool-less clamp and hinge provides easy access to the impeller for routine maintenance and cleaning.

The RSD is available in three sizes with three different controllers. The universal Fan Speed Controller (FSC) controls the variable speed of the RSD fan to maintain proper draft. The MUC controller can also control a mechanical damper and is wired with alarm contacts. With the optional H100 controller, the fan speed is automatically modulated to maintain a constant negative pressure in the flue as accurate as 0.01. Add an available rain-shield to block out additional moisture.