Wardrobe Fittings Compatible with IKEA Pax: Smart Alternatives & Hardware

September 21, 2025

The compatibility of wardrobe accessories with the IKEA Pax carcass system is based on the standardised System 32, allowing standard commercial fittings with a 32 mm hole spacing to be retrofitted effortlessly.

A standardised carcass provides the ideal foundation for bespoke internal planning. The wardrobe frame acts simply as a standardised chassis into which you install the appropriate engine in the form of professional runners, hinges, and storage organisation systems. Anyone wanting to upgrade an existing wardrobe or fit out a new carcass with specialised hardware is not restricted to the manufacturer's proprietary inserts. With the correct knowledge of dimensions, mounting types, and load ratings, tailored solutions can be created for any room and usage scenario.

Key Buying Criteria for Compatible Wardrobe Fittings

Choosing fittings for standard wardrobe units depends on strict technical parameters. To guarantee smooth installation, consider the following criteria:

The System Grid and Carcass Depth

The industry standard in furniture construction is System 32. The pre-drilled holes in the side panels have a 5 mm diameter, a vertical spacing of 32 mm between centres, and are situated precisely 37 mm from the front carcass edge. All professional hardware is engineered around this grid. When selecting the runner length, the internal clear depth of the carcass is critical. A typical carcass with an external depth of around 58 cm offers roughly 56 cm of internal space. Here, you fit runners with a nominal length of 500 mm or 550 mm. If the wardrobe has an internal depth of 50 cm, choose runners with a 450 mm length. For narrow carcass models with an external depth of 35 cm, nominal lengths of 250 mm or 300 mm are used.

Load Capacity and Weight Rating

Clothing—especially winter coats or stacked jeans—places heavy demands on runners over time. Standard runners are rated for a dynamic load capacity of 25 kg to 30 kg. If you plan to store heavy equipment or solid wooden boxes, a load rating of 40 kg to 45 kg is necessary to prevent drawer sag when fully extended.

Overview of Types and Options

Various fitting types are available to structure storage space functionally. The chosen mechanism defines everyday ease of use.

Drawer Runners and Extension Types

A full extension runner pulls out 100% from the carcass, granting complete access right to the back of the drawer. A partial extension runner stops at roughly 75% of its nominal length, limiting access to the rear section. The mounting style affects both aesthetics and usable drawer width. A ball bearing runner is screwed to the side of the drawer box and typically requires 12.7 mm of installation clearance per side. An undermount runner is concealed beneath the drawer base. This keeps the runner invisible and allows the drawer box to be slightly wider. Alternatively, basic builds may use classic roller runners with plastic wheels.

Hinges for Wardrobe Doors

Fitting standard hinged doors requires a concealed cup hinge. The standard drilling in the door (the cup) has a 35 mm diameter. To mount the door flush over the front edges of the carcass, select a full overlay hinge. The typical opening angle for wardrobe doors is 110°.

Movement Mechanisms

When choosing opening and closing technology, note the fundamental difference between two systems:

Damping, often called soft-close, decelerates the drawer or door over the final few centimetres and pulls it shut gently and silently.
The push-to-open mechanism (or tip-on) is designed for handleless fronts. Pressing the front tensions a spring that pushes the drawer or door open slightly.

Both mechanisms are physically opposite in function and cannot be combined on the same runner.

Which Fitting for Which Application?

The configuration of drawer systems depends largely on how the wardrobe is used.

When storing heavy items: Choose heavy duty drawer runners. These feature thicker steel profiles and solid ball cages that will not twist even under a 45 kg load.

When the wardrobe is shared by two people: A wardrobe for 2 people requires clear separation of storage spaces. Combine shallow drawers (approx. 10 cm high) for underwear and accessories at eye level with deep drawers (approx. 20-25 cm high) for knitwear lower down. Rely consistently on full extension drawer runners to prevent long searches at the back of the wardrobe in the morning.

When a handleless, flush front is required: In contemporary interiors, protruding handles can disrupt clean lines. Install push to open drawer runners here. Note that a trigger gap of approx. 2.5 mm to 3 mm must remain between the drawer front and the carcass so the mechanism can release when pressed.

When exceptionally quiet movement is needed: In bedrooms, noise reduction is essential. Use undermount drawer runners combined with soft close drawer runners. These systems glide quietly on synthetic rollers and close with minimal noise.

When dark finishes are chosen: A carcass in anthracite or dark brown absorbs a significant amount of light. Upgrade the interior with furniture LED accessories. Aluminium profiles can be fastened directly into the 32 mm system holes.

Installation Guidance for System 32

Retrofitting hardware into a standardised carcass is straightforward for experienced DIYers and fitters.

Required tools:

Cordless drill/driver
Screwdriver with PZ2 bit (Pozidriv)
Tape measure or folding rule
Spirit level

Step-by-step runner installation:

Count the row of holes from the bottom up to set the exact height for the carcass profile.
Secure the runner profile using specialised 5 mm Euro screws into the pre-drilled holes in the side panel. This ensures maximum grip in chipboard panels.
Attach the counterpart (drawer profile or locking clips) to the drawer box using 3.5 x 16 mm chipboard screws.
Place the drawer box onto the runners and push it back until it audibly clicks into place.
Use the adjustment wheels on the front locking clips (for undermount runners) to fine-tune height and tilt for precise alignment.

Frequently Asked Questions (FAQ)

Does every full extension runner fit into a Pax wardrobe? No. Compatibility depends on carcass depth. The hardware must match System 32, and the nominal length of the runner must not exceed the internal clear depth of the carcass (e.g. a 500 mm runner for a 58 cm carcass depth).

Can I combine soft-close and push-to-open on one drawer? No. These are opposing mechanisms. Soft-close actively pulls the drawer shut and holds it closed, while push-to-open actively pushes it open. You must select one system.

Which hinge do I need for standard wardrobe doors? You need a 35 mm cup diameter concealed hinge designed for a full overlay. This ensures the closed door sits flush against the carcass side edges.

Which screws should be used for pre-drilled carcass holes? For the 5 mm grid holes, use Euro screws only (typically 6.3 x 13 mm or 6.3 x 14 mm). Standard wood screws will not achieve sufficient purchase in pre-drilled holes.

Can I replace basic roller runners with undermount runners? Yes, provided the drawer box meets the structural requirements for undermount fitting. The drawer base usually needs a recess of 12 mm to 15 mm underneath to accommodate the concealed runner.

Suitable Products & Categories for Your Project

To upgrade your wardrobe hardware and tailor it precisely to your needs, explore the relevant fittings across our specialist categories. Choose your hardware based on your calculated measurements and weight classes.