With captive nails. Four integral clamps, two each end. Meets NEMA OS-2, UL listed, classified for fire wall assemblies.
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Line Drawing
https://assets.unilogcorp.com/187/ITEM/DOC/Carlon_100045970_Line_Drawing.pdf
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Specification Sheet
https://assets.unilogcorp.com/187/ITEM/DOC/Carlon_100045970_Specification_Sheet.pdf