{"product_id":"hubbell-1039-2-piece-knockout-seal-3-inches","title":"Hubbell 1039 2-piece Knockout Seal 3 Inches","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HUBBELL 1039 is a 2-piece knockout seal designed to close unused 3-inch knockout openings in electrical enclosures, junction boxes, and panel covers. It creates a secure, finished closure that protects internal wiring from dust, moisture, and physical contact. The two-piece design allows installation without access to the back of the panel, making it practical for retrofit and service work. Licensed electricians and electrical contractors install this seal as part of standard enclosure maintenance and code-compliance work.\u003c\/p\u003e\u003cp\u003eThis knockout seal is suited for residential and light commercial electrical installations where unused knockouts must be closed to meet NEC requirements for electrical enclosures. It is commonly used in load centers, junction boxes, outlet boxes, and other metal or plastic enclosures with 3-inch knockout openings. The split design makes it a practical choice for field installation on existing enclosures already in service.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e2-piece construction allows installation without rear access to the enclosure\u003c\/li\u003e\n\u003cli\u003eFits 3-inch knockout openings in standard electrical enclosures\u003c\/li\u003e\n\u003cli\u003eSeals unused knockouts to meet NEC enclosure closure requirements\u003c\/li\u003e\n\u003cli\u003eSuitable for retrofit and new installation applications\u003c\/li\u003e\n\u003cli\u003eCompatible with both metal and plastic electrical enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement seal for 3-inch knockout openings in standard residential and commercial electrical enclosures.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a licensed electrician. De-energize the electrical enclosure and verify the absence of voltage before beginning work. Insert the two-piece seal into the knockout opening from the front face of the enclosure without requiring rear panel access. Work must comply with applicable NEC requirements for closing unused enclosure openings.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnockout Size\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiece Count\u003c\/strong\u003e: 2-piece\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HUBBELL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1039\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HUBBELL","offers":[{"title":"Default Title","offer_id":51383950704946,"sku":"1039","price":26.43,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312673193.jpg?v=1782612909","url":"https:\/\/voomisupply.com\/products\/hubbell-1039-2-piece-knockout-seal-3-inches","provider":"Voomi Supply","version":"1.0","type":"link"}