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The L H DOTTIE CO LL150 is a 1-1/2 inch threaded close out fitting used in electrical and hardware accessory applications. Close outs are installed at the end of conduit runs or box knockouts to cap off unused openings, providing a clean, code-compliant finish. This fitting threads directly into standard knockout openings and is sold individually. It is a common item for electricians and contractors completing panel, enclosure, or junction box installations.
This fitting is suited for residential and commercial electrical work where unused conduit knockouts need to be secured and covered. It is typically installed in electrical panels, enclosures, junction boxes, and similar hardware applications. The 1-1/2 inch thread size fits standard conduit knockout openings of the same nominal size.
Designed as an OEM-style replacement fitting for standard 1-1/2 inch threaded conduit knockout openings in electrical enclosures, panels, and junction boxes.
Installation is performed by licensed electricians or qualified contractors. De-energize and lock out the enclosure or panel before installing or removing any fittings. Thread the close out fitting into the knockout opening by hand and tighten with the appropriate wrench or pliers. Follow applicable NEC requirements for securing unused openings in electrical enclosures.
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