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SD52 - Transition Box Spiral Pipe Grille (Single Deflection)
MRI Compatible
round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U
Soft white
Performance Data With Opposed Blade Damper
3 Hour Out Of Air Fire Door Grille 2663-48X24 past 12 months SD52 - Transition Box Spiralh3. 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"
US$ 12.00
US$ 68.00
US$ 68.00
