Combination Smoke and Fire Damper FSDR25SS - True Round - UL555/UL555S, Class 1, 1 ½ Hour

Ruskin model FSDR25SS offers HVAC design engineers a low leak high performance combination 1.5 fire & Leakage Class I smoke damper which provides:

• Barrier to stop flame & smoke
• Lowest pressure drop over square-to-round construction for energy savings
• Ease of installation in both square or round openings.
• Corrosion resistance 

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