{"product_id":"steel-city-52-c-0-square-box-plaster-ring-4-inch-1-gang","title":"Steel City 52-C-0 Square Box Plaster Ring 4 Inch 1 Gang","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe STEEL CITY 52-C-0 is a flat-type, one-gang square box plaster ring designed for use in electrical rough-in and finish work. Stamped from hot-rolled pre-galvanized AISI C-1008 steel meeting ASTM G90-U standards at 0.062 inches thick, it provides a durable, corrosion-resistant mounting surface for devices installed in 4-inch square outlet boxes. The quick-release locking mechanism allows fast inner-ring depth adjustment without removing the assembly. Adjustment screws are positioned outside the inner ring, preserving maximum interior capacity for devices. A measured rule molded into the inner ring supports accurate pre-fab settings during pre-drywall installations.\u003c\/p\u003e\u003cp\u003eThis plaster ring is suited for residential and light commercial electrical installations where a 4-inch square box is used as the rough-in box and a single device — such as a switch, receptacle, or low-voltage plate — must be brought flush to the finished wall surface. The locking mechanism is positioned behind the outer ring, protecting it from router damage during drywall cutout and from excess mudding during finishing. Electricians use this ring in new construction and remodel work where precise device depth alignment is required before or after drywall installation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eQuick-release locking mechanism enables fast, tool-free depth adjustment of the inner ring\u003c\/li\u003e\n\u003cli\u003eLocking mechanism positioned behind outer ring — protected from router damage and excess joint compound\u003c\/li\u003e\n\u003cli\u003eAdjustment screws located outside the inner ring to preserve full device capacity inside the box\u003c\/li\u003e\n\u003cli\u003eIntegrated measured rule on inner ring for accurate pre-fab depth setting in pre-drywall installations\u003c\/li\u003e\n\u003cli\u003eHot-rolled pre-galvanized steel construction resists corrosion in standard wall cavity environments\u003c\/li\u003e\n\u003cli\u003eFlat-type profile accommodates flush device mounting on finished wall surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-fit plaster ring for 4-inch square electrical outlet boxes requiring a one-gang, flat-type device cover.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by licensed electricians in accordance with applicable NEC requirements. De-energize the circuit and verify zero voltage at the box before handling any conductors or securing the ring. Set inner-ring depth using the on-ring measurement rule before drywall is hung to reduce adjustment time at finish stage. Do not overtighten the locking mechanism — engage until the ring is firmly seated without deforming the box ears.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Type\u003c\/strong\u003e: 1 Device (1 Gang)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBox Size\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Type\u003c\/strong\u003e: Rounded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Hot Rolled Pre-Galvanized AISI C-1008, ASTM G90-U Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteel Thickness\u003c\/strong\u003e: 0.062 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Silver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApprovals\u003c\/strong\u003e: UL 514A, CSA, FS W-J-800\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Package\u003c\/strong\u003e: 25 per Carton\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e: US\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: STEEL CITY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 52-C-0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STEEL CITY","offers":[{"title":"Default Title","offer_id":51284141015346,"sku":"52-C-0","price":226.93,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/309279594.jpg?v=1781069621","url":"https:\/\/voomisupply.com\/products\/steel-city-52-c-0-square-box-plaster-ring-4-inch-1-gang","provider":"Voomi Supply","version":"1.0","type":"link"}