Series 61 Type A - Thinline Dynamic Fire DamperSeries 61 Type A Thinline Dynamic Fire Damper Click here for Submittal Thinline Dynamic Fire Damper Thinline Profile Fire Damper 2 22Ga 1 Piece Rollformed Frame Dynamic for Installation in Systems Where Fans Remain Running During Fire and Smoke Control UL Classified UL 555 1 Hour Rating, Dynamic for Use in Installations Rated Less Than 3 Hours Specifications: Blades Blades in Air Stream Material Galvanized Steel Standard Stainless Steel Optional
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