3 Hour Out Of Air Fire Door Grille 2663-24X18 Specialty Products 2" ADC compliant round collar

2" ADC compliant round collar with a bead for ease of installation

Standard Features *Surface mount diffuser * Nylon bushings for easy adjustment and quiet setting of steel blades * Countersunk mounting holes for flush appearance with color matching Phillips posi-drive screws * Single deflection diffuser with adjustable steel blades * steel blades are parallel to shortest dimension * Allows 2-way air deflection on one plane * Soft White Options * 932 O - with recessed screwdriver operated opposed blade damper * 1331 and 1332 Series - stainless steel single deflection * Tamper proof screws * Standard Color or Design Color Finish available on this product

Building materials rated 2 hours or less

back blades parallel to the shortest dimension Extruded aluminum surface mount frame with signature line marks Provides 4-way air flow on one plane Nylon bushings on adj

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"