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DSR701 surface mount door straightener is a Sugatsune America passage door hardware component designed to correct warped doors after installation. This straightener is installed post-production, so a warped or bowed door can be corrected without rebuilding or replacing the slab. The bar must run the complete height of the door, providing continuous support from top to bottom to counteract the warp along the full length. With a black finish, it visually blends on the back of many doors while performing the correction work. The DSR701-2200/B-10 model is engineered as surface mount door hardware, so it fits within standard builders hardware workflows. As passage door hardware, it fits into a typical door hardware package as the straightening element that works behind the scenes.
This Sugatsune DSR701 door straightener allows plus or minus 10 mm adjustment from the top of the door using an M4 Allen key, so warp can be tuned precisely while the door stays on its hinges. Adjustment from the top concentrates the setup work at a single access point, which simplifies fine-tuning in a doorway. The unit can be surface mounted to the back of the door, or partially recessed, so it adapts to different door designs and reveals. For partially recessed installation, it requires M4 (U.S. #8) flathead wood countersunk screws, while surface installation uses wood panhead screws, aligning fastener choice with the mounting style. The bar can be cut from the bottom by up to 400 mm, allowing length trimming so the straightener fits doors shorter than the maximum range.
The DSR701 surface mount door straightener installs on the back of a passage door, placing the corrective force on the concealed side while the front face stays clean. As builders hardware classified as passage door hardware, it fits interior doors where appearance on the room side matters and technical adjustments can stay behind. Because it must run the complete height of the door, the bar typically spans from near the top edge to near the bottom edge, following the stile to counteract bow along the entire panel. The minimum door thickness of 16 mm (9/16 inch) positions it for lighter interior doors that still have enough material for secure mounting. With an adjustable length between 70-7/8 inches and 86-5/8 inches, it targets full-height doors that are most prone to visible warping over time.
The plus or minus 10 mm adjustment from the top with an M4 Allen key gives a measurable correction range, so warped doors can be dialed back toward straight without disassembling the frame. Top-side access means adjustment can be reached from above the door, concentrating setup at one location instead of multiple hidden points. Being installed post-production to fix warped doors, the DSR701 allows correction after finishing and hanging, so the work focuses on tuning hardware rather than rebuilding or refinishing the leaf. Its ability to be partially recessed or surface mounted to the back of the door lets installers choose between a slimmer profile or a simple surface fit, depending on door construction. Cutting up to 400 mm from the bottom lets the installer shorten the bar to suit doors below the maximum 86-5/8 inch length while maintaining the required full-height coverage above the cut.
The DSR701 surface mount door straightener is passage door hardware designed for doors with a minimum thickness of 16 mm (9/16 inch), so it suits lighter interior passage doors.
The DSR701 door straightener has a minimum to maximum length range of 70-7/8 inches to 86-5/8 inches, so it supports typical full-height interior doors in that span.
The DSR701 straightener offers plus or minus 10 mm adjustment from the top of the door using an M4 Allen key, allowing on-door tuning of warp correction.
The DSR701 straightener can be partially recessed or surface mounted to the back of the door, providing flexibility for different clearances and design requirements.
The DSR701-2200/B-10 model has a black finish, so the straightener presents a dark, consistent appearance on the back side of the door.
The DSR701 straightener can be cut from the bottom by up to 400 mm, which allows it to be trimmed to suit doors shorter than the maximum length range.
The Sugatsune 70-7/8 inch to 86-5/8 inch DSR701 surface mount door straightener provides post-production correction for warped passage doors within its length and thickness range. Use the plus or minus 10 mm top adjustment with an M4 Allen key to tune the door while it is hanging. Decide between partially recessed or surface mounting on the back of the door to match the door construction. For interior projects where a black-finished straightener on the back side is acceptable, this DSR701-2200/B-10 model offers a hardware-based path to straighter doors using a single full-height component.
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