Model 0540V Wide Body Static Curtain Fire Damper is UL authorised for use where constructing codes demand the protection of HVAC ductwork penetrations in vertical hearth separations (walls or partitions) which have a fireplace resistant score of 4 hrs or much less. The 0540 is assessed for use in static https://heavydutystainlesssteelda46778.boyblogguide.com/35954544/not-known-details-about-dampers-for-industrial-sector