4" x 12" (Wall Opening Size) Royalaire Floor Diffuser (531 Series)10739 4" x 12" (Wall Opening Size) Royalaire Floor Diffuser (531 Series)
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- Extruded aluminum construction
- Corrosion resistant, high strength
- Heavy cross bracing at strategic intervals
- Dual multi-shutter valves for adjustable air pattern
- Nylon slide valve operators
- Satin anodized finish
|Wall Opening (Inches):||
4" x 12"
5-3/8" x 13-3/8"
|Height (Wall Opening):||
|Width (Wall Opening):||
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