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Single Deflection Supply Register - Vertical Blade - Multi-Shutter

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The DA821 is a single deflection supply register with horizontal blades and a multi-shutter damper. The horizontal blades can adjust the spread of air, while the multi-shutter damper adjusts the volume of air.


  • Adjustable, semi-airfoil blades on 2/3" spacing
  • Architectural aluminum construction with extruded frame and roll-formed blades
  • Rattle-free performance with pressure-fitted blades
  • Mult-Shutter damper with easily accessible handle
  • Sealing gasket to prevent streaking on walls or ceiling
  • Available on 2" standard dimensions
  • Custom sizes manufactured up to 1/16" increments


W | White

S | Silver 

M | Mill 

W - White

S - Silver

M - Mill

Common Uses

The DA821 is commonly used as a sidewall register for supply air. It's easy to install and the adjustable deflection make it ideal in most ceiling and surface mount uses. 

Additional Options

DA821-TB | No Screw Holes

DAVD | Opposed Blade Damper

DA821-AA | All Aluminum 

DAHM | Horizontal Blades

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