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The ECM INDUSTRIES LLC GHG-1538 is a flexible black vinyl hole grommet sold in a 5-pack, designed to snap into knockout or drilled holes in steel electrical boxes, panels, and sheet metal. It protects electrical cable and wire from abrasion and sharp metal edges at the point of entry. The inside diameter is 3/8 inches, the required drill hole size is 1/2 inch, and the overall diameter is 11/16 inches. The flexible vinyl construction allows it to seat firmly without fasteners, making installation fast and tool-free for electricians in the field.
This grommet is used in residential and commercial electrical work wherever conductors or low-voltage wiring pass through steel enclosures, junction boxes, sub-panels, or sheet metal equipment housings. It is a common consumable on service trucks and installation jobs where wire entry points need edge protection that meets standard wiring practice. Electricians, HVAC technicians running control wiring, and panel fabricators all reach for this type of grommet as a code-conscious wire management solution.
Designed for snap-in installation in steel electrical boxes, panels, and sheet metal sheeting requiring a 1/2 inch drill hole and 3/8 inch inside diameter wire passage.
De-energize all circuits before working inside electrical enclosures in accordance with NFPA 70 (NEC) lockout/tagout requirements. Confirm the panel knockout or drilled hole measures 1/2 inch before attempting to seat the grommet. Press the grommet firmly into the hole until the flange snaps flush against the panel surface. Do not force oversized cable bundles through the 3/8 inch bore, as this can unseat the grommet or compromise the wire jacket.
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