Seiho International

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Model NR-B
Round Grille

Model RHV RoudGrille

Seiho's model NR-B utilizes a widely-spaced blade design for high capacity, long throw air flow in a double deflection grille. The linked blades facilitate air direction control. The NR-B can be wall mounted securely with its mounting bracket. Excellent for use where high volume air streams are needed such as airport concourses, hotel lobbies, and convention halls.

Material: Heavy-Gauge Aluminum
Finish: Gloss White or Mill Finish (Custom Colors Available)
Sizes: 6" 8" 10" 12" 14" 16" 20" 24"


The NR-B's front and rear linked blades are independently adjustable to provide numerous dispersion patterns.

Contemporary Design Long Air Throw Capability
Wide Dispersion Patterns Double Deflection Design
Concealed Mounting Mechanism Available for Standard Duct Sizes
Heavy Gauge Aluminum Body Extruded Aluminum Airfoil Blades


Custom Color

The standard finish is gross white and mill finish. Powder coatings in a variety of colors are available upon request at a nominal charge. Please contact our sales department for assistance and detailed ordering information.


Smoke Patterns




Submittal Sheet  Inch /  Metric
Performance Data  Inch /  Metric
Revit Files
High Resolution Picture  White Finish /  Mill FInish
Installation Instruction