Fit Elfa Drawer Systems Inside a PAX Wardrobe for 40% More Space

Internal dimensions settle the conversion before any hardware is fixed. A 100 cm nominal PAX frame gives a clear opening of roughly 96.4 cm between the side panels, and the deep and shallow PAX variants leave usable depths of about 56 cm and 35 cm. Elfa’s free-standing drawer frames are built around a top-hung track system that fixes to a wall or to a vertical hang standard. PAX supplies four melamine-faced panels and a 3 mm hardboard back, so the Elfa load path has to be changed.

The extra capacity comes from the runners. Elfa ball-bearing gliders pull the drawer box fully clear of the frame. A MAXIMERA runner stops several centimetres short, and the often-quoted 40 per cent gain comes from recovered depth. In a PAX bay with MAXIMERA drawers, the soft-close housing and drawer-front overlay reduce usable depth. An Elfa drawer of comparable external size pulls out far enough to use close to the full 56 cm interior, and the gain becomes measurable across a five-drawer stack.

Why the back panel causes trouble

Elfa’s top track transfers drawer load into a wall. A PAX back is hardboard tacked into a rebate, and it will not carry a loaded top track. The conversion works by leaving the top-track method aside and fixing Elfa drawer runners to the PAX side panels, using each side panel as a cabinet wall.

The parts worth ordering are the wire or solid drawer baskets, the side-mounted gliders, and the drawer frame uprights if the retailer sells them unbundled. The Container Store lists Elfa Drawer Frames and separate Elfa Gliding Drawer units. In the UK and across European markets, Elfa is distributed through Elfa International AB in Vastervik, Sweden, and sold by independent stockists; IKEA sits outside that supply chain. Wall-dependent parts stay out of this arrangement.

Measure the bay before ordering

A frequent error is ordering a 90 cm Elfa frame for a 75 cm PAX bay. PAX frames come in 50 cm, 75 cm and 100 cm nominal widths. Only the 100 cm frame accepts a 90 cm Elfa drawer unit with enough clearance for the runners.

Measure the clear gap between the two PAX side panels at three heights: top, middle and bottom. Work from the actual internal opening of the wardrobe.

Tall melamine panels can bow inward by 2 to 4 mm over a 236 cm frame. A rail that slides freely at the top can bind lower down if the narrowest point was missed.

Use the smallest of the three width readings, then subtract another 6 mm as working clearance. On a 100 cm PAX measuring 96.4 cm clear, a 90 cm Elfa unit leaves roughly 3 mm of slack on each side, which is the right order of clearance for side-mounted ball-bearing gliders.

The 58 cm deep PAX frame accepts the standard Elfa drawer depth without protrusion. In the 35 cm shallow PAX frame, the same standard basket projects beyond the cabinet line, so the order has to move to a reduced-depth Elfa basket or the layout has to change. Elfa sells multiple depths under the same product family name, so the basket depth needs to be confirmed on the packaging before purchase.

Door hardware also has to be checked before the rails are fixed. Elfa drawer fronts do not align with PAX door hinges. With hinged doors, the door has to close over the deepest point of the Elfa front when the drawer sits inside the bay; sliding doors avoid that particular clash.

Planning the vertical stack

A tall 100 cm PAX frame, typically around 236 cm with a usable internal height in the region of 226 cm, has room for several Elfa drawers stacked above one another. The figure that drives the layout is the vertical run each drawer occupies, which has to include the glider hardware and a finger gap above the basket so the drawer can be gripped and pulled.

Mark the pitch for the first drawer, then step up the panel adding the same pitch for each one. Keep the spare height at the top of the frame for a fixed Elfa ventilated shelf. One extra drawer squeezed into a tight gap usually leaves too little space for fingers over the basket.

Dry-fit before committing the screws: hold a glider rail against the line, slide a basket onto it, and check the finger clearance by hand before drilling.

Fix the gliders into the PAX side panels with short chipboard screws and leave the supplied wall plugs in the packet, because the plugs belong to the wall-mounted method that this conversion abandons. The PAX side panel is 18 mm board, so the screw has to be short enough to bite without piercing the visible outer face.

Level each glider rail with a 600 mm spirit level as it goes on. Where the panel bows inward at the rear, a thin plastic shim packed behind the rail brings it back to level.

The depth gain in practice

Five MAXIMERA medium drawers in a 58 cm frame give about 42 cm of usable internal depth per drawer once the runner housing and the front overlay are deducted. Side-mounted Elfa solid drawers in the same frame expose roughly 56 cm of usable depth, adding around 14 cm per drawer, close to a third more floor area in each one, and across a full stack it accounts for the headline capacity figure.

Load limits and screw movement

Elfa runners are rated for domestic clothing loads. A drawer filled with tools or books can exceed the glider rating, and the side-fixed screws can loosen in the chipboard over months of use.

Side-mounting into PAX chipboard is the weak link in the assembly. Chipboard holds a screw thread far less reliably than the solid timber assumed by Elfa’s wall-mounted system. A fully extended drawer creates a repeated cantilever load, and that load works on the screw holes every time the drawer is pulled out.

Drill a pilot hole slightly under the screw core diameter so the thread gets a clean bite, and stop tightening the moment the rail is seated, because overtightening strips chipboard quickly. Coarse-thread screws designed for chipboard hold better than fine-thread fasteners, and the screw length has to respect the 18 mm panel so the point never reaches the outer face.

The bottom drawer usually carries the heaviest load. A steel angle bracket fixed to the PAX floor panel under the rear of the runner spreads part of that load away from the side screws. Elfa instruction sheets do not include this bracket because the original system was never designed around a chipboard host frame.

That added bracket is the detail that separates a conversion that holds for a decade from one that sags within a season. It also makes the installation more committed, because the side panels and floor panel now carry a fixing pattern created for the Elfa hardware.

Every screw hole in a PAX side panel stays in the chipboard, and MAXIMERA runners use a different fixing pattern. Reversing the conversion would mean working around holes the original drawer hardware never used, so the practical decision to weigh up front is whether the recovered depth is worth holding the bay on Elfa runners for good.