Model DFDR-510 is a round fire damper for use in walls, floors, and partitions with fire-resistance ratings less than three hours. Dynamic-rated-fire dampers are in HVAC systems that remain operational in the event of a fire.

Model G, direct drive centrifugal roof exhaust fans provide the industry's best performance and durability for general clean air applications where air is discharged downward, toward the roof. Units feature the most advanced motor cooling of any fan in its class.

• Speed controllable, with up to 30% turndown
• 17 x 17 inch base with prepunched mounting holes for easy attachment to roof curb
• 13.5 x 13.5 inch recommended roof opening

Model SQ, direct drive centrifugal inline fans feature a unique combination of installation flexibility, rugged construction, ease of service, high efficiency and low sound levels. These compact fans are ideal for indoor clean air applications including exhaust, return or make-up where space is a prime consideration.

• Aluminum backward inclined, nonoverloading centrifugal wheel design
• Composite backward inclined, non-overloading centrifugal wheel design
• Energy efficient, Vari-Green motor for maximum motor controllability.
• Inlet and discharge duct collars for easy duct connection
• Removable access panels permit easy access to interior components for cleaning and servicing