Retrofitting a Push-to-Open System: Precise Positioning of Push Catches for Handleless Fronts in System 32

March 22, 2026

A push catch is a spring-loaded mechanism that opens handleless furniture fronts with a gentle press and can be positioned precisely in the cabinet carcass via the System 32 drilling pattern.

Introduction: Implementing Handleless Fronts Mechanically

Dispensing with furniture handles requires a precise mechanical solution to reliably open doors and flaps. A push catch (often also referred to as a tip-on mechanism) performs this task. When pressure is applied to the front, a tensioned spring is released, extending a plunger and pushing the door open slightly so it can be gripped from behind.

Retrofitting into existing carcasses is straightforward, provided the System 32 hole pattern is present. Like a mechanical clockwork movement, however, the interaction between hinge and catch requires absolute precision when adjusting the release travel.

This guide is aimed at fitters and experienced DIYers. The pure assembly time per door is around 10 to 15 minutes with a pre-drilled row of holes. The level of difficulty is moderate, as the exact gap dimension determines functionality.

Required Tools and Materials

For the professional installation of a push-to-open system on a cabinet door, you will need the following equipment:

Push catch (consisting of adapter plate, mechanism, and counter plate)
Cordless drill driver
Cross-head screwdriver or bit (drive PZ or PH, matching the screw)
Bradawl (punch)
Tape measure or folding ruler
Try square
If applicable, Euro screws (Ø 5 mm) or chipboard screws (Ø 3.5 mm or 4.0 mm)

Preparation: Checking Hinge Compatibility

Before installing a catch, the type of hinges used must be analysed. Standard concealed cup hinges / cabinet hinges have an automatic closing feature (spring) that holds the door shut over the final centimetres.

A push catch must work against this spring force. If the hinge spring is too strong, the ejection force of the catch will not be sufficient to push the door open far enough. Even more problematic are concealed cup hinges / cabinet hinges with soft close. The soft-close damping is designed to close the door slowly. A push-to-open ejection is heavily braked or blocked by the damper.

For optimal results on handleless doors, hinges without a closing spring (unsprung) or with an automatic opening feature (reverse spring) should ideally be used. If replacing the hinges, for example on a standard angle such as concealed cup hinges / cabinet hinges 110 degrees, is not desired, a catch in a long-throw version (with strong magnetic holding force and a long ejection travel) must strictly be chosen.

Step-by-Step Guide: Installing Push Catches in System 32

The following instructions refer to the installation of a linear adapter plate in a standard cabinet carcass.

Step 1: Determine the Position

The release mechanism should be positioned where pressure is typically applied to the front. On standard doors, this is the handle side, roughly at mid-height. Never install the catch close to the hinge axis, as the leverage here is unfavourable.

Step 2: Use the System 32 Hole Pattern

System 32 is the standard in furniture manufacturing. The front row of holes has a distance of 37 mm to the carcass front edge. The distance between the drilled holes is exactly 32 mm. The diameter of the pre-drilled holes is 5 mm. Place the linear adapter plate of the catch onto this row of holes.

Step 3: Screw the Adapter Plate

Use special Euro screws for the 5 mm holes. These grip perfectly into the chipboard with their blunt thread. If no row of holes is present, mark the position with a try square (37 mm from the front edge), prick the points with a bradawl, and use chipboard screws (e.g. 3.5 x 15 mm). Ensure the plate is aligned exactly parallel to the carcass edge.

Step 4: Clip on the Mechanism

Slide or clip the actual push catch onto the securely screwed adapter plate. An audible click confirms correct seating.

Step 5: Mount the Counterpart on the Front

Most catches feature a magnet at the tip of the plunger. To ensure it holds the door gently closed and the release functions cleanly, a metallic counterpart (counter plate or adhesive plate) must be attached to the inside of the front. Extend the plunger, mark the tip with some chalk or a pencil, and press the door lightly against it. The mark shows the exact centre point for the counterpart. Screw or stick the plate in this location.

Step 6: Adjust Gap Dimension and Release Travel

For the push mechanism to trigger, it requires travel to be pushed inwards. The front must not sit tightly against the carcass when closed. By turning the tip of the plunger, its length can be adjusted (typically by +5 mm / -1 mm). Adjust the plunger so that a gap of 2.5 mm to 3.0 mm is created between the closed front and the carcass front edge. This is the mandatory release travel.

Excursus: Push-to-Open for Drawers

While a separate catch is fitted on doors, handleless drawer runners require a different approach. A retrofitted door catch is usually too weak for the weight of a loaded drawer.

Here, the runner slides must be replaced. Special drawer runners push to open have the release mechanism integrated directly into the runner. Pressing the drawer front tensions the spring in the slide, which then pushes the drawer forward.

It is important to clearly distinguish the terms: a full-extension runner can be pulled out of the carcass by 100%, whereas a single-extension runner only extends by about 75%. The type of extension is independent of the opening mechanism. Those seeking maximum comfort often ask for a combination of push-to-open and soft-close damping. Because these mechanisms physically oppose each other (ejection vs deceleration), simple drawer runners with soft close cannot be combined with simple push catches. For this combination, highly complex, synchronised drawer systems are required that unite both components within a single mechanism cassette.

Common Installation Mistakes

Missing release gap: If the door sits flush against the carcass due to buffers or incorrectly adjusted hinges, the catch cannot be depressed. The mechanism blocks. The 2.5 mm gap is essential.
Incorrect hinge choice: Combining a strong catch with soft-close hinges leads to the door popping open, only for the damper to immediately brake it or even pull it back in.
Ignoring the door overlay type: When calculating the gap dimension, consideration must be given to whether the door is mounted as full overlay, half overlay, or inset. With inset doors, the adapter plate must be set back further according to the front thickness (e.g. 37 mm + 19 mm front thickness).
Mounted too close to the hinge: If the catch is positioned too close to the hinges (e.g. on wide flaps where gas struts for heavy flaps would actually be better suited), the leverage is insufficient to push the front open.

FAQ – Frequently Asked Questions

Can I use a push catch with soft-close hinges? Technically, this is not recommended. Soft-close (damping) slows down the closing movement. However, a push-to-open system requires free movement to push the door open. The damper works against the ejection force. Use unsprung hinges without a closing spring.

What is the difference between short-throw and long-throw? Short-throw catches push the door open by just a few centimetres, which is sufficient for handleless fronts with unsprung hinges. Long-throw catches have a longer plunger (often over 35 mm ejection length) and a stronger spring. They are used when standard hinges with an automatic closing spring are fitted and their spring force needs to be overcome.

How large must the gap between door and carcass be? The mechanism requires travel to be pushed in and triggered. This gap dimension (also called release travel) should be adjusted precisely and is generally between 2.5 mm and 3.0 mm.

Can I also use a catch with wide-angle hinges? Yes, this is easily possible. The ejection also works with large opening angle hinges, such as concealed cup hinges / cabinet hinges 155 degrees, provided the hinges do not have soft-close damping. The catch merely provides the initial opening gap; swinging the door open further is done manually.