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Retainer cables are provided on sizes 12" and larger to allow the inner cones to hang securely while adjusting the diffuser
Square or rectangular for vertical mount only
Steel construction
round collar only) * 830 OR - factory installed opposed radial damper (sizes 6"-14") * 830 FR - U
2" Round 3 Hour Vertical Fire Door 2565-28 past 12 months Retainer cables are provided onh3. Standard Features * 2561 Square or rectangular fire door for vertical mount only. Maximum dimension 48w, 49h. For damper free area chart A click here * 2563 Out of Airstream fire door. Square or rectangular for vertical mount only. Maximum dimension 48w, 41h. For damper free area chart B click here * 2565 Round fire door for vertical mount only. Available 4" thru 40" round. * UL and California State Fire Marshall approved * 2" thinline frame *
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