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Sugatsune HDS-10 left soft-down stay is a heavy duty cabinet stay designed for downward-opening flap doors, giving the flap controlled motion where a left-side support is needed. This stay is specified as the left side of cabinet stay, so installers can match it to the hinge layout on flap-style fronts. HDS-10 is designed to hold door in closed and opened position, which means the flap stays shut without extra catches and stays open without manual support during access. The stay is used with downward-opening flap door used with piano, butt or drop hinges, so it integrates into common hinge setups on work surfaces, cabinets, or storage fronts. This model is identified by manufacturer part HDS-10HL/BLK and SAP description HDS-10 STAY, DOWN OPEN, LEFT, H.DUTY, BK, giving a clear reference when matching to plans, specs, or existing installations.
The HDS-10 heavy duty soft-down stay is used in pairs, so installers plan one left-side stay and a matching right-side component to balance the flap. The torque guideline Torque Calculation: Torque = Door Height x 1/2 x Door Weight provides a simple way to size the system, tying door dimensions and door weight directly to the force demand on the stays. Working from this calculation helps match flap design to the HDS-10 Series capability, supporting predictable motion and hold positions. The stay is configured for downward-opening flap doors on piano, butt or drop hinges, so hinge selection and mounting layout can be coordinated in the design stage for straightforward on-site installation.
This HDS-10 Series left heavy duty soft-down stay works on downward-opening flap doors, which makes it suitable anywhere front panels swing down for access rather than lifting up. Because the web description states For downward-opening flap door used with piano, butt or drop hinges, the same left stay can be used on flap fronts built with continuous piano hinges, discrete butt hinges, or drop hinges, keeping hardware choices consistent. Being defined as Left side of cabinet stay, this unit locates on the left when viewing the cabinet, so it pairs with an opposite-side stay to support the full door width. HDS-10 is designed to hold door in closed and opened position, so once fitted into the cabinet side, it keeps the flap under control at both rest positions.
The torque guideline Torque Calculation: Torque = Door Height x 1/2 x Door Weight ties the cabinet design directly to the stay selection, helping fabricators design flap doors around a clearly stated mechanical demand. Using the stay in pairs distributes the load, so each side shares the torque created by the combination of door height and door weight as the flap swings down. The heavy duty notation H.DUTY in the SAP description signals that this version is intended for applications where higher loading or more frequent operation is expected, giving shops a defined option for demanding flap fronts. The black designation BK and part number HDS-10HL/BLK allow repeat orders of the same finish and handing, which supports consistent appearance and performance across multiple cabinets or replacement work.
The Sugatsune HDS-10HL/BLK is for downward-opening flap door applications, so the front panel swings down to open rather than lifting upward.
This model is specified as Left side of cabinet stay, so it is used on the left side when viewing the cabinet front, paired with a complementary right-side stay.
The HDS-10 Series left stay is described for downward-opening flap door used with piano, butt or drop hinges, so it suits doors hung on piano hinges.
The HDS-10 torque guideline, Torque = Door Height x 1/2 x Door Weight, links door size and weight to torque demand, supporting predictable flap performance.
The SAP description lists H.DUTY, indicating a heavy duty HDS-10 variant intended for flap door situations that call for stronger stay performance.
This stay is from Sugatsune America with manufacturer part HDS-10HL/BLK, providing a clear reference when matching specs or reordering.
The Sugatsune HDS-10 left soft-down stay combines a defined torque guideline with specific use on downward-opening flap doors, giving installers predictable motion control. Its Left side of cabinet stay designation, heavy duty notation, and HDS-10HL/BLK black identification simplify specifying, documenting, and repeating successful flap designs across projects.
