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About heavy duty stainless steel damper manufacturers

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Model 0540V Large Frame Static Curtain Fireplace Damper is UL permitted for use where by making codes require the safety of HVAC ductwork penetrations in vertical fire separations (partitions or partitions) that have a fireplace resistant score of 4 several hours or considerably less. The 0540 is classed for use https://dampers-for-industrial-se90011.boyblogguide.com/35890125/not-known-details-about-dampers-for-industrial-sector

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