Sugatsune HES3D concealed hinge is a 3-way adjustable concealed hinge designed to keep door lines clean while giving you precise control over alignment. As an invisible hinge in the Invisible Hinges product class, it recesses into the door and frame so the hardware stays out of sight when the door is closed, supporting a streamlined look on architectural and cabinet projects. The hinge is UL rated, up to 3 hours, so it supports fire-rated door assemblies where a UL listing and longer exposure resistance are required. It has successfully passed 300,000 open and close private cycle tests, demonstrating that the hinge is built to handle heavy, repetitive use in demanding environments. Hinge leaves separate for easy installation and removable, which simplifies hanging or removal of a 1.75 inch door without disturbing the mortise layout.
This HES3D-E190DC-UL hinge is specified for a 1.75 inch door, so its geometry and UL rating align with typical solid-core architectural doors in that thickness. Being a 3-way adjustable concealed hinge, it allows adjustment after installation in three directions, helping address small variances in mortise depth or frame alignment without reworking the pocket. The hinge leaves separate for easy installation and removable, so one leaf can be set on the frame and the other on the door, then brought together, which is especially helpful when working alone or in tight openings. Cover caps that hide all screw heads allow you to complete final adjustments and then close off the fastener view, leaving only the hinge body presented at any visible edge.
This Sugatsune America hinge sits in the Hinges category under Invisible and Recessed Hinges, so it is suited to applications where the design calls for concealed hardware and uninterrupted surfaces. With a specification for a 1.75 inch door, it aligns with many commercial and higher-end residential doors that use that thickness, fitting well into solid-core door schedules. The UL rated, up to 3 hours, listing means it is appropriate for fire-rated openings that require a hinge with documented performance over extended exposure. Because the hinge leaves separate for easy installation and removable, it works well on doors that may need to be removed periodically for finishing, access, or renovation without cutting into the surrounding frame again.
The 3-way adjustable design of this concealed hinge supports repeatable, accurate door alignment by letting you correct margin, depth, and side-to-side position without changing the mortise. That adjustability helps reduce callbacks tied to rubbing edges or latching problems as building conditions change. Passing 300,000 open and close private cycle tests indicates that the hinge construction maintains alignment over many cycles, so the adjustments you set are supported over long-term use. The UL rated, up to 3 hours, performance provides confidence that the hinge can remain functional on qualifying fire-rated assemblies during extended exposure, supporting life-safety design intent. Cover caps that hide all screw heads allow a consistent, refined appearance from opening to opening, which is important when multiple doors are aligned in a corridor or wall. The dull chrome color keeps any visible hinge components understated, so attention stays on door faces and surrounding millwork rather than on hardware details.
The HES3D-E190DC-UL is a 3-way adjustable concealed hinge in the Invisible Hinges product class, so it sits recessed and hidden while still allowing precise alignment.
This Sugatsune America hinge is UL rated, up to 3 hours, so it supports use on qualifying fire-rated door assemblies needing extended exposure performance.
The HES3D-E190DC-UL is specified for a 1.75 inch door, aligning with many solid-core architectural doors that use this common thickness.
The 3-way adjustable concealed hinge allows fine-tuning in three directions, helping set even reveals and relieve binding without recutting the mortise.
The successful 300,000 open and close private cycle tests indicate the hinge is designed to maintain function and alignment under heavy, repeated use.
Cover caps hide all screw heads, so after adjustments the visible areas present a clean, uninterrupted look without exposed fastener heads.
The HES3D-E190DC-UL from Sugatsune America combines 3-way adjustable concealed hinge performance with a UL rating up to 3 hours, making it suited to demanding door schedules. Its design for a 1.75 inch door, successful 300,000 open and close private cycle tests, and dull chrome finish align with commercial and architectural openings where appearance and function both matter. Use this invisible hinge on projects where clean lines, long-cycle performance, and a documented UL listing are all part of the specification.
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