HDS-10S-HL/WT lid stay is a heavy duty down stay from Sugatsune America designed for a downward-opening flap door, so it supports doors that drop open instead of lifting up. The stay is intended for use on the left side, which helps installers plan layouts when matching left and right hardware on wider doors. It is used with piano, butt, or drop hinges, so it works alongside those hinge types rather than replacing them in the opening motion. When the door is pushed toward the cabinet, the HDS-10S mechanism is designed to self close and soft close, so the flap is drawn shut smoothly without a harsh slam. The stay is part of Sugatsune's lid supports and stays product class, which keeps it in the hardware family cabinet builders expect around work surfaces and tables.
This stay is specified as left, so it is intended to mount on the left side of a downward-opening flap door, which guides hardware placement on the cabinet interior. The torque calculation is given as torque equals door height times one-half times door weight, so installers can use door height and weight to decide which HDS-10S type fits the application. Sugatsune lists K-type at 60 to 95 kgf.cm per pair, M-type at 95 to 130 kgf.cm per pair, H-type at 110 to 160 kgf.cm per pair, and S-type at 140 to 180 kgf.cm per pair, which defines the torque bands available when pairing two stays on one door.
This lid support is specified for downward-opening flap doors, so it fits cabinet fronts or work surface doors that swing down to open. The use with piano, butt, or drop hinges means it partners with those hinges to control motion, rather than acting as the only moving component. Its role as a down stay in the lid supports and stays class places it in projects where a flap needs controlled movement and support as it opens downward, such as access panels or fronts over work areas. Being identified as heavy duty gives it relevance for larger or heavier downward-opening doors where standard light-duty stays may not match the torque demands.
The torque calculation, given as door height times one-half times door weight, ties the installation directly to the HDS-10S torque ranges, so choosing between K, M, H, and S types becomes a measured decision instead of guesswork. K-type at 60 to 95 kgf.cm per pair, M-type at 95 to 130 kgf.cm per pair, H-type at 110 to 160 kgf.cm per pair, and S-type at 140 to 180 kgf.cm per pair define graduated support levels, so each step covers a different door size or weight band. Using the stay in pairs aligns with these torque values, so installing two units on a flap door is how the listed torque performance is realized. The self close and soft close design in the HDS-10S line then applies that torque to closing control, so an appropriately sized pair not only supports the weight but also manages the closing motion in a predictable way.
The HDS-10S-HL/WT lid stay is for a downward-opening flap door, so it supports doors that swing down when opened.
The stay is used with piano, butt, or drop hinges, so it works alongside these hinge types on the same flap door.
This Sugatsune heavy duty lid stay is specified as left, so it is intended for installation on the left side of the flap door.
The HDS-10S design provides soft close when pushed shut, so the door slows near closing and avoids a harsh impact at the cabinet front.
Torque is calculated as door height times one-half times door weight, which ties door dimensions and mass to the torque range selection.
The K, M, H, and S torque ranges are specified per pair, so using two stays on a flap door delivers the stated torque support band.
This Sugatsune America lid support is defined as a heavy duty, left-side HDS-10S-HL/WT stay for downward-opening flap doors, so it suits projects needing controlled drop-front motion. With torque based on door height and one-half door weight, and ranges from 60 to 180 kgf.cm per pair across K, M, H, and S types, it gives installers a measurable way to align door size with support level.