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Sugatsune self-opening stay HDS-20S/SL-WT is a top-opening lid support for flap doors, so it handles vertical upward-opening fronts that need controlled support. This S-Type, left-hand stay is built for heavier applications, giving installers a defined option when standard lid supports are not sufficient. The stay is designed for use on top-opening flap doors, so it fits work surfaces, cabinet lids, and similar upward-swinging panels that need positive hold in the open position. It works with piano, butt, or concealed hinges, so it integrates into common hinge layouts without changing your basic door construction. The stay is a dedicated left version, so hinge and stay placement stay consistent with handed layouts. Used in pairs, the hardware shares the load across both sides, which supports smoother motion and better long-term alignment.
The HDS-20S S-Type top-opening stay is designed for flap doors that open upward, so it supports the panel as it swings and then settles into its operating angle. The part is specified to let the lid self open past the free stop angle, so once the flap passes that balance point it continues to the fully opened position without needing continuous manual support. HDS-20S is designed to hold the door in the fully opened position, so the flap remains up while work happens at the cabinet or work surface. This behavior reduces the need for separate props and keeps the opening clear, which is useful where access and headroom matter.
This Sugatsune America lid support and down stay is defined for top-opening flap doors, so it suits upward-opening cabinet fronts, bench lids, or work tables that need support when raised. Its classification under work surface and tables and lift systems, lid supports and stays, connects it to applications where a surface or flap lifts and then stays up for access. Because it works with piano, butt, or concealed hinges, it can be integrated into new builds or upgrades that already rely on those hinge types. The left-hand orientation lets installers plan hardware placement around the hinge side, so the motion path and clearances follow a predictable pattern in the cabinet design.
The S-Type torque range of 111 to 150 kgf.cm (96 to 130 lbs. inch) per pair defines how much moment the pair of stays is intended to handle, so installers can match door size and weight to a support that will reliably hold in the open position. The torque calculation is specified as Torque = Door Height x 1/2 x Door Weight, so the installer can determine whether the flap falls within the S-Type range before selecting the stay. This connection between the torque formula and the rating helps align hardware choice with the actual door geometry, which supports consistent opening behavior across multiple units in the same project. When installed on a qualifying top-opening flap, the stay allows the lid to self open past the free stop angle and then hold fully open, so the motion is repeatable from cabinet to cabinet without additional adjustment routines. Using a pair on each door also keeps the load balanced, which supports smooth travel and reduces stress concentrations at the hinge and stay mounting points.
The Sugatsune HDS-20S/SL-WT is designed for top-opening flap doors, so it suits upward-opening cabinet fronts, lids, and work surfaces that need controlled opening and a stable open position.
The HDS-20S torque is based on the formula Torque = Door Height x 1/2 x Door Weight, so door dimensions and weight directly determine whether it fits the S-Type torque range.
The HDS-20S S-Type stay has a torque range of 111 to 150 kgf.cm (96 to 130 lbs. inch) per pair, so it targets heavier flap doors needing greater holding strength.
The HDS-20S is designed to hold the door in the fully opened position after it self opens past the free stop angle, so the flap remains up while the opening is in use.
The top-opening HDS-20S/SL-WT stay is specified for use with piano, butt, or concealed hinges, so it fits common hinge choices in cabinet and work surface projects.
The HDS-20S/SL-WT is identified as a left stay, so it is intended for the left-hand side of the flap, helping installers align hardware consistently across similar openings.
The Sugatsune self-opening stay HDS-20S/SL-WT pairs a defined S-Type torque range with top-opening flap door behavior, so it gives you a predictable hold-open solution for heavier upward-swinging fronts. Its support for piano, butt, or concealed hinges keeps your hinge options open while still providing a positive hold at the fully opened position. For projects calling for a left-hand, white, heavy duty plastic and steel stay on top-opening flaps, this model aligns the torque calculation with real door dimensions to support consistent performance across your install.