Ventamatic NuVent NXSRD Radiation Damper for SH-Series Bath Fans, No Light; UL tested and labeled (UL Standard 555C) for use in 1, 2, and 3 hour floor-ceiling and roof-ceiling construction; Removable damper assembly and sleeve to allow easy motor replacement; UL approved insulation blanket constructed of non-asbestos, high-temperature reinforced fiber thermal curtain; UPC 697453535809 (NXSRD NX-SRD NXS-RD VENTAMATICNXSRD VENTAMATIC-NX-SRD NUVENT)

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