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The DELTANA S45U3 is a heavy-duty square hinge measuring 4.5 inches by 4.5 inches, finished in Bright Brass. Built for demanding door applications, this hinge is constructed to handle high-cycle use on heavier door assemblies where a standard-weight hinge would wear prematurely. The Bright Brass finish provides a clean, traditional appearance suited to commercial and residential architectural hardware installations. Sold as a pair, the S45U3 is the hardware of choice for contractors and finish carpenters who need a reliable, full-size square-corner hinge with a consistent finish straight from the box.
The S45U3 is appropriate for interior and exterior door installations requiring a 4.5-inch heavy-duty hinge. Typical applications include entry doors, commercial passage doors, and any solid-core or heavy door assembly where added hinge strength is specified. The Bright Brass finish coordinates with other Bright Brass architectural hardware in commercial and residential settings. This hinge is suitable for use by licensed contractors, finish carpenters, and experienced door hardware installers.
Designed as an OEM-style replacement or new-installation heavy-duty square hinge for residential and commercial doors requiring a 4.5-inch square-corner mortise hinge in a Bright Brass finish.
Installation should be performed by a qualified finish carpenter or licensed contractor following applicable local building codes. Power down any access-control or electric-strike hardware before beginning door frame work. Mortise the hinge leaf fully flush to the door edge and frame jamb to ensure proper door swing and prevent binding. Use the correct chisel and drill equipment to maintain clean mortise geometry; do not over-drive fasteners into the hinge leaves.
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