Order by 24/7 by web, contact our sales reps or call by phone.
What you need, when you need it, all in one place.
Most orders ship same day.
Advice and support from knowledgeable professionals.
Soft Down Stay Top Opening identifies this Sugatsune America lid support as a stay for top-opening flap doors where controlled opening and holding are important. The product is a soft down stay from the Lid Supports and Stays class, so it manages flap movement instead of relying on friction hinges. It is designed for top-opening flap doors used with piano, butt, or concealed hinges, which lets you keep your preferred hinge style while adding motion control. The HDS-20S/HL-BL model is a left version, so it answers left-side support needs in paired installations. It is described as plastic and steel in black, aligning with projects that call for a dark hardware appearance. As an H-type unit with a 70 to 110 kgf.cm per pair torque range, it addresses medium-duty flap sizes within that torque window. Used in pairs, this stay is specified to hold the door in the fully opened position.
The H-type torque rating of 70 to 110 kgf.cm, or 61 to 95 lbs. inch per pair, sets the operating band for the HDS-20S/HL-BL, so flap dimensions and weight can be chosen to stay inside that range. The torque calculation formula stated as Torque = Door Height times 1/2 times Door Weight provides a direct way to relate door size and mass to the stay's capacity. HDS-20S is designed to hold the door in the fully opened position, which stabilizes the flap at its top swing point during use. The description notes that the lid will self open past the free stop angle, so once the flap passes that point it continues to its fully open hold position under the stay's action.
This product sits in the Work Surface & Tables, Lift Systems, Lid Supports and Stays, Down Stays category, so it aligns with top-opening applications rather than side-hinged doors. It is specified for top-opening flap doors used with piano, butt, or concealed hinges, giving flexibility across long continuous hinges and more compact hinge points. The left designation on HDS-20S/HL-BL directs it to the left-hand side in a paired setup, creating a mirror with a corresponding right unit when balancing support. As an H-type stay with 70 to 110 kgf.cm per pair capacity, it aims at flap doors whose torque calculation from door height and weight falls into that window, matching many mid-sized lids in cabinetry or work surfaces. Being plastic and steel in black ties the hardware visual to darker casework or modern black-finished components.
The defined torque range of 61 to 95 lbs. inch per pair helps plan flap dimensions so that the stay supports the load without under- or over-stressing the mechanism. Using the torque formula, Torque = Door Height times 1/2 times Door Weight, links measurable door properties directly to the HDS-20S design envelope. Because the HDS-20S is designed to hold the door in the fully opened position, the flap remains open while hands are free to load or unload, which supports repetitive access tasks. The behavior where the lid will self open past the free stop angle means that, once the door passes that angle, the stay continues moving it to the final open position, reducing small variations in how far the user lifts it. Working with piano, butt, or concealed hinges lets this stay be integrated into a range of hinge layouts without changing the basic motion plan, which simplifies repeat use in a shop standard. Sold in both broken and full box quantities with a discount for full box orders, the product supports one-off jobs as well as larger rollouts where multiple identical flap assemblies are built.
The HDS-20S/HL-BL soft down stay is designed for a top-opening flap door, so it supports lids that swing upward rather than side-hinged cabinet doors.
The stay is specified for flap doors used with piano, butt, or concealed hinges, letting it work alongside common hinge styles in cabinet and furniture construction.
The H-type torque range of 70 to 110 kgf.cm per pair indicates the suitable combination of door height and weight, guiding flap dimensions to fall within that load band.
For this stay, torque is calculated as Door Height times 1/2 times Door Weight, linking physical flap measurements directly to the specified torque capacity range.
The HDS-20S is designed so the lid will self open past the free stop angle and hold the door in the fully opened position, keeping the flap up during access.
The HDS-20S/HL-BL is a left model, so it is intended for the left side in a pair, matching layouts where lid supports are installed symmetrically on both sides.
The HDS-20S/HL-BL soft down stay from Sugatsune America combines H-type torque capacity of 70 to 110 kgf.cm per pair with design for top-opening flap doors using piano, butt, or concealed hinges. Its left-hand configuration, black plastic and steel construction, and ability to hold the door in the fully opened position give you a defined solution for upward-swinging lids built within the stated torque formula and range. For projects needing repeatable flap behavior across multiple cabinets or work surfaces, this lid support provides a specified motion profile and load window to base door dimensions on.