Broan-NuTone 634 Steel Roof Cap

The Broan-NuTone 634 Steel Roof Cap is a 3-1/4" by 10" rectangular or round duct transition ventilation termination component for use in HVAC systems. It is installed on roof outlets to vent exhaust air from kitchen range hoods, bathroom exhaust fans, and other air movement equipment. The cap has a protective hood to prevent rain from entering the cap and to minimize back drafting into the ductwork while allowing the air to discharge steadily. It acts as an exterior endpoint in ventilation networks ensuring correct exhaust routing and safeguarding internal duct pathways in residential and light commercial HVAC applications.