2" Round Horizontal/Vertical Mount Fire Damper 2550-20 Residential Registers & Grilles 1550 Series Engineering/Performance Data

1550 Series Engineering/Performance Data

Nylon bushings on adj

T-Bar Modular Core Diffuser with Round Collar 18-20

Square to round 2" collar with roll formed retention bead

2" Round Horizontal/Vertical Mount Fire Damper 2550-20 Residential Registers & Grilles 1550 Series Engineering/Performance DataStandard 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