HDS-10S-SL/WT lid stay from Sugatsune America is a super heavy duty, left-side stay for downward-opening flap doors, so it supports work surfaces or cabinet fronts that swing down instead of up. This stay is specified for use with piano, butt, or drop hinges, so it works within common hinge layouts on flap-style doors. The design is for downward-opening flap doors, so it helps guide the panel through its swing and final closing. When the flap is pushed toward the cabinet, the HDS-10S stay is designed to self close, so the mechanism completes the closing motion without continued force on the panel. That self-closing action is combined with soft close function, so the stay slows the final travel of the door and brings it to a controlled stop.
This Sugatsune America lid stay is identified specifically for downward-opening flap doors, so layout and drilling patterns are arranged around flaps that rotate down from a horizontal or vertical face. It is marked as a left-side stay, so installers locate it on the left-hand side of the opening when planning hardware positions. The stay works with piano, butt, or drop hinges, so hinge selection stays within these types when building or modifying the door. Because the HDS-10S stay self closes and soft closes when pushed, hinge and stay alignment are set so the mechanism can engage through the final degrees of rotation.
This Sugatsune America HDS-10S-SL/WT lid stay is categorized as a Lid Supports and Stays, Down Stays product, so it fits installations where the door or panel moves downward as part of its operation. It is specifically described for downward-opening flap doors, so it suits fronts that pivot down to expose a work surface or interior space. The stay is designated as left, so it is positioned on the left side of the flap assembly, matching hardware handedness in the layout. It is specified for use with piano, butt, or drop hinges, so the stay works alongside these hinge types that carry the primary pivot load. The white plastic and steel construction is stated in the product name, so this combination provides a mix of metal structure with a white exterior presence that ties into light-colored cabinet interiors or fronts.
The HDS-10S stay is used in pairs, so torque calculations are based on two units supporting the flap. The specified torque calculation is given as Torque = Door Height x 1/2 x Door Weight, so installers use actual door height and weight values to estimate the torque demand. The K-type range is 60 to 95 kgf.cm, or 52 to 82 lbs. inch per pair, so this range covers lighter flap doors within the super heavy duty series span. The M-type range is 95 to 130 kgf.cm, or 82 to 112 lbs. inch per pair, so it addresses mid-range flap loads. The H-type range is 110 to 160 kgf.cm, or 95 to 138 lbs. inch per pair, so it suits heavier flap doors within that torque band. The S-type range is 140 to 180 kgf.cm, or 121 to 156 lbs. inch per pair, so it is aimed at the upper end of door height and weight combinations addressed by the HDS-10S family.
The HDS-10S-SL/WT lid stay is described for downward-opening flap doors, so it supports doors that pivot down to open rather than lifting up.
This Sugatsune America lid stay is specified for use with piano, butt, or drop hinges, so it mounts alongside those hinge types on the flap door assembly.
The product name identifies the stay as left, so it is intended to be installed on the left side of a downward-opening flap door.
The HDS-10S stay is described as self closing and soft closing when pushed to close, so it slows the door near the cabinet and completes the closing motion.
Torque for the HDS-10S stay is specified as Torque = Door Height x 1/2 x Door Weight, so door size and weight define the torque requirement.
The K, M, H, and S types are torque ranges in kgf.cm and lbs. inch per pair, so each type corresponds to different door height and weight combinations.
This Sugatsune America HDS-10S-SL/WT lid stay combines downward-opening flap door function with self close and soft close action, so it manages both motion and final shut. With defined torque calculation and K, M, H, and S torque ranges per pair, it ties flap door sizing directly to stay selection. The left-handed identification and compatibility with piano, butt, or drop hinges keep layout decisions aligned with the product specification. For downward-opening flap doors matching these parameters, this super heavy duty stay offers a defined path from door dimensions to hardware choice.