21 Installation Frame

All-steel construction
Golden Sand enamel finish
Note:  Not furnished with #24 diffuser.  Not required when using 22 Butterfly Damper or 23 Opposed Blade Damper.
Cannot be used with SD and SDD

21 Installation Frame Available Sizes and Drawing
Submittal Drawing (PDF file)

More Ceiling Diffusers

Customer Service

Phone   800.433.6341 or 616.656.8200
Faxne   800.223.8461