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Designed for use in walls
Maintains horizontal airflow pattern
w/ Steel Opposed Blade Damper
Adjustable steel curved blades
Designed for protection of ceiling openings in fire rated floor/ceiling assemblies with fire resistance ratings of 3 hours or less
2" Round Horizontal/Vertical Mount Fire Damper 2550-24 Step Down Ceiling Diffuser Designed for use in wallsStandard 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
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