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2" ADC compliant round collar with a bead for ease of installation
Heavy gauge cold roll steel
Holds up to a 2" filter (not included) with filter retention tabs (FG2)
REVIT FILES Spiral Diffuser Radius Flush Mount Diffuser Single Deflection
3 Hour Out Of Air Fire Door Grille 2663-24X18 Specialty Products 2" ADC compliant round collarh3. Standard Features * 2661 Square or rectangular fire door for vertical mount only. Maximum dimension 60x60. For damper free area chart A click here * 2663 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 60w x 52h. For damper free area chart B click here * 2665 Round fire door for vertical mount only. Available 4" thru 52" round. * 3 hour rated * UL and California State Fire Marshall approved * 4 1 4"
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