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661/A661 — Steel/Aluminum 2-way Register, MS damper, 1/3" Fin Spacing

How to Specify

Provide the following information:

  • Model Number
  • Width
  • Height
  • Finish

How to Purchase

FAQs for GRDs

661/A661 — Steel/Aluminum 2-way Register, MS damper, 1/3" Fin Spacing

Assets/Details

Engineering Data (177 KB, PDF)
  • Stamped aluminum construction (A661)
  • All-steel construction (661)
  • Used for ceiling or sidewall installations
  • For heating or cooling
  • Ideal for shallow duct installations
  • Two-way deflection
  • 1/3" spaced fins set at 20 degrees
  • Galvanized multi-shutter valve
  • 1-5/8" depth when fully opened
  • Interlocking valve louvers for positive shut-off
  • Bright White finish

661 Standard sizes (inches)

Height
Width681012141618202430
4
5
6
8
10
12

Note: When ordering sidewall products, specify horizontal (width) dimension first.

A661 Standard sizes (inches)

Height
Width681012141618202430
4
6

Contact factory for sizes not listed.

 

661/A661 — Steel/Aluminum 2-way Register, MS damper, 1/3" Fin Spacing