Soft-Close Dampers as an Alternative to Grass — Compatible & Matching

A soft-close damper reduces the closing speed of cabinet doors and drawers using an integrated hydraulic cylinder, preventing them from slamming shut.

Introduction: Replacement Parts and Alternatives for Existing Cabinets

When repairing or upgrading kitchen units, wardrobes, or bathroom cabinets, finding the right replacement part is often the main priority. If factory-fitted hardware is worn out or you want to retrofit soft-close damping, specific brand names are frequently sought after. However, replacing components with identical branded parts is not strictly necessary. Fittings designed as an alternative to Grass offer the same functional mechanics, provided the fundamental installation dimensions match.

For joiners and installers, the key factor is that replacement components are compatible with Grass or other established systems. This primarily concerns the hole drilling pattern, the cup dimensions for hinges, and the runner lengths for drawers. With the correct technical specifications, a faulty runner or a broken hinge can be seamlessly replaced without needing to drill new holes into the carcase side.

What to Look for Regarding Hardware Compatibility

For a replacement fitting to suit Grass or comparable cabinet systems, specific industry standards must be observed. System 32 acts as a universal coordinate system for furniture fittings: it defines the spacing of drilling holes in the carcase wall at exactly 32 mm apart. The front row of holes typically starts 37 mm from the front edge of the carcase.

Concealed Cup Hinges

When replacing a hinge, three technical parameters are decisive:

1. The cup diameter: The standard dimension for a cup hinge is 35 mm. Less commonly, usually on very light or small doors (such as bathroom mirrored cabinets), 26 mm is used.
2. The opening angle: Standard doors mostly use hinges with 95° or 110°. For internal drawers or corner units, wide-angle hinges with 155° or 165° are required.
3. The hinge overlay type: An exact distinction must be made here. A full overlay is used when the door completely covers the carcase side panel. A half overlay is used on central dividing panels where two doors share the same partition. An inset hinge is installed when the door sits flush between the carcase side panels.

Drawer Runners

For drawer runner systems, nominal length is the primary criterion. This usually ranges from 250 mm - 800 mm. In addition, the extension type must be defined. A full extension runner allows access to the entire drawer depth (100 % extension travel). A partial extension runner only opens the drawer to around 75 % due to its construction. For concealed under-mount installation beneath the drawer base, dedicated under-mount runners are used, which often feature a different drilling pattern compared to side-mounted roller or ball-bearing slides.

Matching Components for Replacement

When searching for components suitable for Grass setups, the range provides various functional hardware groups aligned with these standards.

Hinges with Integrated Soft-Close

To quieten banging cabinet doors, replacing old hinges with concealed cabinet hinges with damping (Soft Close) is the most efficient approach. Here, the damping cylinder is integrated directly into the hinge arm. For standard kitchen cupboard doors, replacing them with 110-degree cup hinges is common practice. If the existing cruciform mounting plate matches the 32 mm grid, it can often remain in the carcase whilst only the hinge arm is clipped on.

Replacing Drawer Runners

If an old drawer is catching or the runner profile is bent, replacing the pair of runners entirely is advisable. Drawer runners with soft-close ensure that the drawer is pulled shut gently over the final few centimetres. If you wish to improve functionality at the same time, upgrading to full extension drawer runners is recommended. Important: The internal carcase width and the material thickness of the drawer sides must be measured precisely when selecting new runners.

Retrofit Dampers for Existing Systems

If the mechanics of the old hinges are still fully functional and only the soft-close feature is missing, installing new cup hinges is not mandatory. In this situation, separate furniture door dampers can be retrofitted inside the carcase. These are either screwed onto the hinge side of the carcase wall or recessed into a 10 mm hole in the carcase front edge. They catch the door just before it closes and provide hydraulic braking.

Flap Fittings and Gas Struts

Wall units with lift-up flaps often rely on mechanical stays or gas struts. If the holding force diminishes and the flap drops shut on its own, the stay must be replaced. When choosing an alternative to Grass flap systems, the force rating in Newtons (N) is crucial. This is usually printed directly on the cylinder (for example, 250 N or 320 N). A suitable gas strut must match the flap weight and flap height precisely. For particularly large or heavy MDF fronts, heavy-duty gas struts are required.

Installation and Retrofitting: Technical Steps

Basic tools are required to fit replacement hardware: a cordless screwdriver, a PZ bit (Pozidriv, size 2 is standard for furniture screws), a tape measure, and a try square.

1. Removal and measurement: Remove the old component. For hinges, measure the diameter of the cup hole (usually 35 mm) in the door and the spacing between the screw holes.
2. Fitting the mounting plate: Screw the mounting plate into the carcase. Standard 5 mm Euro screws fit System 32 hole patterns.
3. Inserting the hinge: Place the hinge cup into the routed hole in the door and align it square. Secure it using wood screws (usually 3.5 mm or 4 mm diameter).
4. Adjustment: Modern cup hinges feature 3D adjustment. Using the adjustment screws on the hinge arm, the door can be aligned with millimetre precision in height, depth, and lateral overlay (gap reveal).

For drawer runners, ensure that the cabinet profile is fitted perfectly level. An offset of just 1.5 mm between the left and right sides can prevent the soft-close mechanism from engaging smoothly.

FAQ – Frequently Asked Questions About Hardware Compatibility

Is soft-close the same as push-to-open? No, they are opposite mechanisms. Soft-close slows down a closing door and pulls it gently shut. Push-to-open (or tip-on) is an opening mechanism for handleless units: pressing the front causes the door or drawer to pop open slightly. These two systems generally cannot be combined in purely mechanical fittings.

When do I choose which hinge overlay type? If the door covers the carcase side panel completely, a full overlay hinge is needed. If two doors share a central partition (such as in continuous wardrobes), a half overlay hinge is required. If the door sits flush within the carcase frame, choose an inset hinge.

How do I determine the correct length for drawer runners? Measure the external depth of the drawer box from the back panel to the inside face of the drawer front. Choose a runner as long as possible without exceeding the internal depth of the cabinet. With an internal carcase depth of 520 mm and a drawer depth of 500 mm, a runner with a nominal length of 500 mm is fitted.

Can I install a gas strut with higher Newtons so the flap stays up better? This is not recommended. If the force in Newtons is too high for the weight of the front, closing the flap will require excessive effort, and it will snap upwards forcefully when opened. The Newton rating of the replacement part should correspond exactly to the old strut's specification or the calculated flap weight and height.