{"product_id":"deltana-dsb4b3-unl-square-hinge-ball-bearing-4x4-brass","title":"Deltana DSB4B3-UNL Square Hinge Ball Bearing 4x4 Brass","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe DELTANA DSB4B3-UNL is a 4-inch by 4-inch square door hinge with ball bearings, finished in unlacquered bright brass. It is a full-mortise architectural hinge designed for interior and exterior door installations where a clean, square-corner profile is required. The ball bearing construction reduces pivot friction and supports consistent, smooth door operation over high-cycle use. The unlacquered bright brass finish delivers a natural brass appearance that will develop a patina over time. This hinge is sold as a pair and is specified and installed by finish carpenters, door and frame contractors, and general contractors working on commercial and residential projects.\u003c\/p\u003e\n\u003cp\u003eThis hinge suits standard wood door and frame applications in residential and light commercial construction. The 4-inch leaf size is appropriate for doors up to standard interior and light-duty exterior weight ranges. The unlacquered finish makes it a fit for projects where a living brass look is specified or where the owner intends to apply a custom finish or lacquer on site. It is commonly used on entry doors, passage doors, and closet doors where architectural hardware quality is a project requirement.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBall bearing pivot for smooth, low-friction door swing and extended service life\u003c\/li\u003e\n  \u003cli\u003e4 inches x 4 inches square corner leaf geometry for a clean architectural profile\u003c\/li\u003e\n  \u003cli\u003eUnlacquered bright brass finish allows natural patina development or field-applied topcoat\u003c\/li\u003e\n  \u003cli\u003eSolid brass construction for corrosion resistance and dimensional stability\u003c\/li\u003e\n  \u003cli\u003eSold as a pair for standard single-door hinge sets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style architectural replacement or new-installation hinge for standard full-mortise door and frame applications requiring a 4-inch square hinge with ball bearings.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by carpenters or door hardware contractors using standard mortise chisels and a drill with appropriate bit sizes for pilot holes and screw pockets. Power down any electric strike or access control hardware integrated into the door frame before beginning hinge work. Fasteners should be set flush without over-driving to avoid stripping the mortise pocket or deforming the leaf. Verify door weight and frequency of use against the hinge load rating before finalizing hinge count per door.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLeaf Size\u003c\/strong\u003e: 4 inches x 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearing Type\u003c\/strong\u003e: Ball bearing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Unlacquered bright brass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 5.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 2.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 0.8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.6 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSales Unit\u003c\/strong\u003e: Pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: DELTANA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: DSB4B3-UNL\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DELTANA","offers":[{"title":"Default Title","offer_id":51561171288370,"sku":"DSB4B3-UNL","price":57.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/23779f37293ddc5f5199396bd2fefffc.jpg?v=1786462937","url":"https:\/\/voomisupply.com\/products\/deltana-dsb4b3-unl-square-hinge-ball-bearing-4x4-brass","provider":"Voomi Supply","version":"1.0","type":"link"}