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RS52 Series Engineering/Performance Data
Standard Features * Stamped 22 gauge steel curved blade T-Bar lay-in supply diffuser * Field adjustable * Five air patterns: 101 - one way
TVB - Thermal Vapor Blanket
One piece curved frame with gasket fits flush to spiral pipe
Designed for use in walls
4" 3 Hour Vertical Mount Fire Door 2661-36X20 Smoke-Fire Damper RS52 Series Engineering/Performance Datah3. 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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