Product 0540V Large Frame Static Curtain Fire Damper is UL accredited for use the place setting up codes need the safety of HVAC ductwork penetrations in vertical hearth separations (partitions or partitions) which have a fireplace resistant score of 4 hrs or considerably less. The 0540 is assessed to be https://dampers-for-industrial-se90011.csublogs.com/44354713/everything-about-dampers-for-industrial-sector