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HDS-20 Right-Hand Medium Duty Soft-Down Stay gives a controlled soft-down action for a top-opening flap door, so the door moves in a managed way that supports safer, more predictable operation in everyday cabinet use. This Sugatsune America stay is classified as medium duty, aligning its performance to applications where the door weight and size fall within its rated torque range, which helps planners match the stay to real door loads. The product is a right-hand configuration, which matters when laying out hinge positions and when mirroring hardware on paired doors. Designed for use on a top-opening flap door, it pairs with piano, butt, or concealed hinges, so the stay works alongside common hinge choices on shop projects. The unit is used in pairs, which spreads the load between two stays and supports more consistent motion across the full width of the door.
The HDS-20MR/BLK stay uses a torque calculation of Torque = Door Height x 1/2 x Door Weight, giving installers a clear way to relate door dimensions and mass to the stay selection. This formula ties the vertical height and weight of a flap door directly to the torque requirement, so the installer can line up those values with the rated torque bands for this series. The K-Type range of 140 to 200 kgf.cm per pair, the M-Type range of 200 to 250 kgf.cm per pair, and the H-Type range of 250 to 300 kgf.cm per pair describe how different HDS-20 variants cover progressively heavier or taller doors. Working within these ranges supports more consistent motion and holding performance from the soft-down stay once mounted.
This HDS-20 Right-Hand Medium Duty Soft-Down Stay is specified for top-opening flap doors, directing it toward cabinets where the front lifts upward instead of swinging out, such as overhead storage or work-surface covers. Its role as a down stay within the Lid Supports and Stays product class places it in assemblies where the hardware manages movement as the door closes from the top-opened position. Because it is intended to be used in pairs, each flap door set-up is planned around two stays working together, which shapes layout decisions for side clearances and hinge placement. Pairing with piano, butt, or concealed hinges allows this stay to slot into a wide range of hinge-driven designs without changing the basic opening motion of the flap. The right-hand orientation matters when matching to cabinet layout conventions, so the installer can keep handed components consistent across multiple openings in the same run.
The specified torque equation, Torque = Door Height x 1/2 x Door Weight, links the actual geometry and mass of the flap door directly to the selection of an HDS-20 type, so planners can relate real panel sizes to the stay capability. The K-Type 140 to 200 kgf.cm per pair, M-Type 200 to 250 kgf.cm per pair, and H-Type 250 to 300 kgf.cm per pair describe how this series addresses progressively higher torque demands, and this gradation allows designers to stay within a suitable band for the door they are building. Operating in the correct torque range supports the soft-down function that holds the door in the fully opened position, helping the flap remain at the top of travel during use. Because this product is part of Sugatsune America's Lid Supports and Stays line, it aligns with applications where controlled motion and stable open positions are central to the cabinet's function over repeated cycles.
The HDS-20 Right-Hand Medium Duty Soft-Down Stay is designed for a top-opening flap door, so it supports doors that lift upward rather than swing out from a cabinet face.
The HDS-20 soft-down stay is used on a top-opening flap door in combination with piano, butt, or concealed hinges, so it works alongside these hinge types in the same assembly.
The HDS-20 is a right-hand configuration, which affects how it aligns on the cabinet side and helps maintain consistent hardware orientation across multiple flap doors.
The HDS-20 soft-down stay is used in pairs, so two stays share the load on the top-opening flap door for balanced support across the width.
The HDS-20 series uses Torque = Door Height x 1/2 x Door Weight, so door size and mass guide whether a K-Type, M-Type, or H-Type torque range is appropriate.
Within the HDS-20 series, K-Type covers 140-200 kgf.cm per pair, M-Type covers 200-250 kgf.cm per pair, and H-Type covers 250-300 kgf.cm per pair.
This HDS-20 Right-Hand Medium Duty Soft-Down Stay from Sugatsune America is purpose-built for top-opening flap doors that operate with piano, butt, or concealed hinges, so it fits directly into that style of project. Its torque calculation and defined K-Type, M-Type, and H-Type ranges tie the hardware choice to real door height and weight, which helps align the stay to the panel you are building. For a top-opening flap door that needs soft-down motion and a stable fully opened position, this HDS-20MR/BLK configuration provides the defined performance parameters needed for planning your next cabinet run.