Latest News from McGill AirFlow LLC


Duct-D-Fuser™ Air Diffuser Grilles, Fittings, Assemblies, and Registers for HVAC Duct Systems

McGill AirFlow manufactures sturdy, low-cost Duct-D-Fuser air diffusion products for exposed HVAC air distribution systems in large, open-area commercial and industrial facilities. Products include a variation of grilles, fittings, assemblies, and registers. Because of their lighter weight, Duct-D-Fuser products are easier to install and less expensive to manufacture and ship than conventional rectangular tap-type diffusers.

A McGill AirFlow Model DDF-GF framed grille shown loose and mounted on duct.  

The Model DDF-G series grilles are constructed to be flush mounted to curved or flat surfaces and designed to provide directional throw airflow performance characteristics similar to tap-mounted grilles. The type SP round air diffusers are constructed of 360° perforated duct to provide low-throw, low-draft airflow performance. If local control of direction, volume, or velocity is required, McGill AirFlow’s series of deflection, linear slot, and drum louver registers and its Factair™ worker-controlled terminal outlets are available.

To learn more about these exciting new products, you can download the Duct-D-Fuser brochures from our web site. Literature for McGill AirFlow’s products and services is available through our web site and visitors are encouraged to register with it. Once registered you will gain access to our PDF library. You can also register for a free subscription to our on-line Current Awareness Service (CAS) and receive periodic and timely information addressing advances in air handling technology and duct system design. To access literature, register with our site, and subscribe to CAS, click here.

To see if your diffuser project qualifies for a free duct system design analysis, contact the McGill AirFlow engineering department ( or the sales engineering office nearest you.

For more information contact the sales office nearest you (click here for a list of locations), or contact McGill AirFlow LLC, One Mission Park, Groveport, OH 43125, Ph: 614/829-1200, Fax: 614/829-1291, E-mail:

Duct-D-Fuser™ and Factair™ are trademarks of United McGill Corporation.

Media Contact:
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McGill AirFlow LLC
One Mission Park
Groveport, Ohio 43125
Fax: 614/829-1291

© 2002-2015 McGill AirFlow LLC
An enterprise of United McGill Corporation—Family owned and operated since 1951

Unless otherwise noted, all (™) trademarks and (®) registered trademarks are property of United McGill Corporation.

Products depicted were current at the time of publication. All product designs, specifications, and features are subject to change without notice.