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The ECM INDUSTRIES LLC 49-448P is a heavy duty plenum-rated cable tie designed for bundling and securing wire and cable runs in air-handling spaces and plenum plenums where fire and smoke codes apply. Each tie measures 48 inches in length and delivers a tensile strength of 180 LB, making it suitable for large bundle diameters and demanding mechanical loads. The natural color finish is standard for plenum-rated applications. This product is sold in a 4-pack and is installed by electricians, low-voltage technicians, and HVAC service professionals working in commercial and residential plenum spaces.
Plenum-rated cable ties are required in return-air and supply-air ceiling plenums and raised-floor air distribution systems where building codes restrict the use of standard nylon ties. The 49-448P is suited for securing large conduit bundles, HVAC flex duct support, and wire management in air-handling environments. Its 48-inch length accommodates oversized bundle diameters typical in commercial mechanical rooms and above-ceiling cable trays.
Designed for use as a plenum-rated cable tie in commercial and residential air-handling spaces where fire and smoke code compliance is required for cable management accessories.
Installation is performed by licensed electricians or low-voltage technicians following NEC requirements for plenum-rated materials in air-handling spaces. De-energize circuits before working in ceiling plenums or raised-floor systems. Use a cable tie tensioning tool for consistent pull strength on heavy-duty ties. Do not over-cinch ties on low-voltage cable bundles, as excessive compression can affect signal integrity.
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