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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16
Building materials rated 2 hours or less
2" ADC compliant round collar with a bead for ease of installation
REVIT FILES Spiral Diffuser Radius Flush Mount Diffuser Single Deflection
Nylon bushings for easy adjustment and quiet setting of blades running parallel to shortest dimension
Standard collar diameter is the same as the diffuser size
3 Hour Out Of Air Fire Door Grille 2663-24X18 Specialty Products Building materials rated 2 hoursh3. 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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