Aluminum Spiral Duct Grille
The Spiral Duct Grille is an all-aluminum air outlet designed for exposed duct systems. Engineered for delivering quiet, efficient airflow with a clean, modern look.
Superior Aluminum Construction
- Made from all-aluminum with mill finish for lightweight strength
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Corrosion-resistant. Ideal for exposed duct applications
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Rigid frame maintains structural integrity under pressure
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±1/32" tolerances ensure precise, secure duct fit
Engineered for Quiet, Efficient Airflow
- Optimized ¾" blade spacing ensures smooth, directional air
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Sealed fit with foam gasket minimizes air leakage and rattling
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Low-noise design suited for open ceiling environments
Suitable for supply or return applications – Adjustable scoop for directional airflow or open intake versatility
Packaged to Protect
- Ships pre-assembled for faster installation
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Protective foam gasket minimizes shipping damage
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Individually boxed
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Reduces jobsite prep with ready-to-install design
Modern Look for Exposed Ducts
- Sleek, low-profile grille enhances visible ductwork aesthetics
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Clean lines and simple profile align with contemporary interiors
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Mill finish to match any project style
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Specifications & Part Numbers
Composition: All-aluminum construction with mill finish:
Item Number Fits Duct Size Neck Size (L x W) Overall Size (L x W) Finish SP-14X3-M 6"-11" 14" x 3" 17 1/8" x 4 1/4" Mill SP-10X4-M 8"-13" 10" x 4" 13 1/8" x 5 1/4" Mill SP-12X4-M 8"-13" 12" x 4" 15 1/8" x 5 1/4" Mill SP-14X4-M 8"-13" 14" x 4" 17 1/8" x 5 1/4" Mill SP-16X4-M 8"-13" 16" x 4" 19 1/8" x 5 1/4" Mill SP-18X4-M 8"-13" 18" x 4" 21 1/8" x 5 1/4" Mill SP-20X4-M 8"-13" 20" x 4" 23 1/8" x 5 1/4" Mill SP-24X4-M 8"-13" 24" x 4" 27 1/8" x 5 1/4" Mill SP-10X6-M 14"-21" 10" x 6" 13 1/8" x 7 1/4" Mill SP-12X6-M 14"-21" 12" x 6" 15 1/8" x 7 1/4" Mill SP-14X6-M 14"-21" 14" x 6" 17 1/8" x 7 1/4" Mill SP-16X6-M 14"-21" 16" x 6" 19 1/8" x 7 1/4" Mill SP-18X6-M 14"-21" 18" x 6" 21 1/8" x 7 1/4" Mill SP-20X6-M 14"-21" 20" x 6" 23 1/8" x 7 1/4" Mill SP-24X6-M 14"-21" 24" x 6" 27 1/8" x 7 1/4" Mill SP-14X8-M 22" - Over 14" x 8" 17 1/8" x 9 1/4" Mill SP-16X8-M 22" - Over 16" x 8" 19 1/8" x 9 1/4" Mill SP-18X8-M 22" - Over 18" x 8" 21 1/8" x 9 1/4" Mill SP-20X8-M 22" - Over 20" x 8" 23 1/8" x 9 1/4" Mill SP-24X8-M 22" - Over 24" x 8" 27 1/8" x 9 1/4" Mill - Documents