Model DDF-RDL Series Drum Louver Registers

These drum louver registers are ideal for exposed ductwork applications where long throws and adjustable air patterns are required. Typical installations include commercial kitchens and laundries, food-processing plants, manufacturing facilities, multi-purpose buildings, recreational centers, sports arenas, shopping malls, and warehouses.

The Model DDF-RDL drum louver register is easily installed on the perimeter of round or flat oval spiral duct. The curved frame is rolled to the diameter of round duct or minor axis dimension of flat oval duct, insuring a perfect fit every time. This eliminates the need for costly saddle taps and will save you time and money during the installation process.

Drum Louver Register

These drum louver registers are made of heavy gauge aluminum and are available in heights of 4, 6, and 8 inches and lengths up to 60 inches, which makes them versatile to any project.

To provide additional directional control of airflow, the drum louver register is able to rotate +/-40 degrees up or down and the blades, spaced two inches apart, pivot side to side from the front fascia. This gives the drum louver a clean architectural look to any exposed ductwork system.

Drum Louver Schematic

Available Sizes for the DDF-RDL Drum Louver Registers

DDF-RDL Available Sizes

SilverGuard Antimicrobial


McGill AirFlow's DUCT-D-FUSER™ Air Diffusion Products:

Model DDF-G Series Grilles
Model DDF-G Series Fittings
Model DDF-G Series Assemblies
Performance of DDF-G Series Products
Type SP In-Duct Fitting
Type SP Assembly
Model DDF-R Series Deflection Registers
Model DDF-R Series Linear Slot Registers
Model DDF-RDL Series Drum Louver Registers

Performance Data Sheet (.pdf)


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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.