Greenheck 462105 Support Mullions for use in Oversize Openings are designed to allow for the installation of static fire dampers into vertical openings that are larger than the largest UL rated size for that damper. The mullions enable the construction of a fire barrier that is larger than the maximum available size. They are constructed from steel and are intended for use in concrete block or solid concrete walls. The mullions can be used vertically, horizontally, or both to split up a vertical wall opening requiring the use of a damper having a 11⁄2 hour fire resistance rating.
Greenheck 462105 Support Mullions for use in Oversize Openings are designed to allow for the installation of static fire dampers into vertical openings that are larger than the largest UL rated size for that damper. The mullions enable the construction of a fire barrier that is larger than the maximum available size. They are constructed from steel and are intended for use in concrete block or solid concrete walls. The mullions can be used vertically, horizontally, or both to split up a vertical wall opening requiring the use of a damper having a 11⁄2 hour fire resistance rating.
Greenheck 462105 Support Mullions for use in Oversize Openings are designed to allow for the installation of static fire dampers into vertical openings that are larger than the largest UL rated size for that damper. The mullions enable the construction of a fire barrier that is larger than the maximum available size. They are constructed from steel and are intended for use in concrete block or solid concrete walls. The mullions can be used vertically, horizontally, or both to split up a vertical wall opening requiring the use of a damper having a 11⁄2 hour fire resistance rating.
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