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Soft Down Stay Top Opening defines this Sugatsune America HDS-20S/HL-WT unit as a stay for a top-opening flap door, so it supports lids that open upward on cabinets or work surfaces. This stay is specified for use with piano, butt, or concealed hinges, which means it works alongside your primary hinge choice instead of replacing it. The product is a left-hand H-type stay, so it is intended for the left side of a top-opening flap when viewed from the front. The design is described as a soft down stay, so it controls the motion of the door as it opens toward its free stop position. The white plastic and steel construction gives a neutral appearance with a metal core, so it suits light-colored casework where a white component is preferred.
This Sugatsune America soft down stay is part of a lid supports and stays class, so it works as the support element while hinges provide the pivot. The product is left-hand, so it is intended for the left side in a paired installation on a flap door. The stay is specified for top-opening doors, which means the mounting geometry is arranged for doors that swing upward from a lower cabinet or surface. The H-type torque rating of 70 to 110 kgf.cm (61 to 95 lbs. inch) per pair sets the working window for the required door torque. The published torque calculation, Torque = Door Height x 1/2 x Door Weight, ties door size and weight directly to that usable range.
This Sugatsune America HDS-20S/HL-WT stay is identified as a lid supports and down stays product, so it fits projects where a flap door needs controlled support rather than a simple free-swing hinge. The web description states it is for a top-opening flap door, so it is suited to cabinets or enclosures where the door lifts up from the front. It is designed for use with piano, butt, or concealed hinges, so it integrates into casework layouts that rely on those established hinge styles. Because it is a left-hand H-type stay, it is used on the left side of the door in a pair, with a corresponding unit on the other side. The combination of plastic and steel in white visually coordinates with light cabinet interiors while still using steel components as part of the mechanism.
The web description specifies that HDS-20S is designed to hold the door in the fully opened position, so once the flap reaches that final angle it remains open while work is done inside the cabinet. It also notes that the lid will self open past the free stop angle, so after the door passes a defined point the stay continues the movement toward full open without requiring constant lifting force. The H-type torque range of 70 to 110 kgf.cm (61 to 95 lbs. inch) per pair defines the operating window where this behavior is expected when matched to the calculated torque. The stated torque formula, Torque = Door Height x 1/2 x Door Weight, ties door design directly to stay selection for projects in that range. As part of the lid supports and stays class, this soft down stay adds controlled motion to top-opening flap doors that are already hinged with piano, butt, or concealed hinges.
The HDS-20S/HL-WT is designed for a top-opening flap door, so it supports doors that lift upward from the front of a cabinet or enclosure.
The HDS-20S/HL-WT is a left-hand stay, so in a typical pair it mounts on the left side of the top-opening flap when viewed from the front.
The HDS-20S/HL-WT is specified for use with piano, butt, or concealed hinges, so it works alongside these hinge types on a top-opening flap door.
The H-type range for HDS-20S is 70 to 110 kgf.cm (61 to 95 lbs. inch) per pair, so doors within that torque window match the stated operating design.
The HDS-20S/HL-WT uses the formula Torque = Door Height x 1/2 x Door Weight, so door dimensions and weight directly define the torque value.
The HDS-20S is designed to hold the door in the fully opened position, so once past its free stop angle the door remains up for access.
The Sugatsune America HDS-20S/HL-WT soft down stay is defined for top-opening flap doors working with piano, butt, or concealed hinges, so it fits flap layouts built around those hinge types. Its left-hand H-type design with a 70 to 110 kgf.cm (61 to 95 lbs. inch) per pair torque range connects directly to the published Torque = Door Height x 1/2 x Door Weight calculation. For projects that call for a white plastic and steel stay in the lid supports and down stays class, this part number aligns the motion control, torque range, and appearance into a single specified component.