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Step down core designed for 4-way uniform air distribution
Standard Features * Adjustable curved blade
955 Series Engineering/Performance Data
REVIT FILES
Surface mount fixed blade grille with airfoil blades at 0°
2" Round Horizontal/Vertical Mount Fire Damper 2550-18 Commercial Step down core designed forStandard Features Spring actuated curtain type fire damper with 2 1 4" round connection for horizontal or vertical mount 2" thin line roll formed out of airstream frame Designed for use in walls, floors and partitions with fire resistance ratings of 2 hours or less (for ceiling application, see 2700 series) UL listed and tested in accordance with UL Standard 555 1 1 2 hour fire resistance rating Building materials rated 2 hours or less CSFM California
