Bi-Fold Lift Assist Mechanism 5-7 lbs from Sugatsune America is a lift assist mechanism designed for upward-opening flap doors, so it supports bi-fold fronts that lift instead of swing. The lift assist function makes flap doors feel lighter during operation, which helps reduce effort when lifting doors in frequent-use wall cabinets or workstations. The mechanism is equipped with a free stop function that holds the flap at any angle from 50 degrees to fully open, giving stable positioning for loading, unloading, or working under the open front. A built-in soft-closing function slows closing speed between 0 degrees and 40 degrees, which reduces door slam and helps protect the cabinet structure and front edge. The unit is part of the Lid Supports and Stays class, tying it directly to lift-up and stay-open applications in cabinetry and casework.
The mechanism allows easy adjustment of the opening angle, so installers can match the flap travel to the specific cabinet height and user reach. It must be used together with a concealed hinge with an appropriate opening degree, which aligns lift and hinge motion so the door tracks correctly throughout its range. A vertical adjustment function on the mounting plate on the flap supports fine-tuning, letting installers shift the mounted position slightly during set-up to achieve consistent front alignment. Installation is described as simple when using the supplied template, helping layout the mounting locations so drilling and positioning follow a repeatable pattern across multiple cabinets.
This Sugatsune America HBF-ELAN-LL lift assist mechanism is specified for upward-opening flap doors, so it is suited to cabinet fronts that hinge at the top and swing up. The 5 to 7 lb reference in the description indicates the weight range the lift assist is designed to support, so it aligns with lighter to mid-weight flaps commonly found in upper wall cabinets. As part of the Work Surface & Tables and Lift Systems, Lid Supports and Stays categories, the mechanism is tailored for applications where a front needs to lift, hold, and then close in a controlled way rather than hang on side hinges. The free stop capability between 50 degrees and fully open allows positioning the flap so it clears the operator while keeping the front ready to close again without having to support it by hand.
The integrated lift assist function is designed to offset part of the flap weight, which makes cycles smoother and supports more consistent movement over time. The soft-closing function that slows the flap between 0 degrees and 40 degrees is engineered to manage the last portion of travel, helping maintain predictable closing behavior even as users let the front drop from partial open positions. Easy opening-angle adjustment lets installers tune how far the flap travels, which matters when coordinating multiple cabinets in a run or working near ceilings or soffits. The requirement to pair the mechanism with a concealed hinge with appropriate opening degree ties hinge selection directly to lift performance, supporting synchronized motion. The vertical adjustment function on the mounting plate on the flap provides a way to dial in front reveal and joint lines after mounting, reducing rework when aligning several doors. The mechanism having passed 30,000 open and close cycles in a private test indicates that its internal lift, free stop, and soft-closing actions are designed to perform consistently through repeated daily use.
The Bi-Fold Lift Assist Mechanism Anodized, Light Gray 5-7 lbs is designed for upward-opening flap doors, so it works on fronts that hinge at the top and lift up.
The lift assist feature makes flap doors feel lighter, reducing the effort needed to open fronts in the 5 to 7 lb range and supporting smoother daily operation.
The free stop function lets the flap hold at any angle from 50 degrees to fully open, so users can leave the door at a comfortable height while accessing the cabinet.
The soft-closing function slows the flap between 0 degrees and 40 degrees, reducing slam at the cabinet frame and helping protect the door and structure.
The HBF-ELAN-LL lift assist mechanism allows easy adjustment of the opening angle, so installers can match flap travel to cabinet height and surrounding clearances.
The mechanism uses a mounting plate on the flap with vertical adjustment, letting installers fine-tune the front position to achieve even reveals across adjacent cabinets.
The Sugatsune America HBF-ELAN-LL Bi-Fold Lift Assist Mechanism Anodized, Light Gray 5-7 lbs combines lift assist, free stop, and soft-closing functions for upward-opening flap doors, so it supports controlled movement through the full cycle. Adjustable opening angle and a vertically adjustable mounting plate on the flap let installers fine-tune both travel and alignment to match real cabinet conditions. Pairing this mechanism with a concealed hinge with the appropriate opening degree creates a coordinated system for top-hinged fronts in the 5 to 7 lb range.