USM Haller Room Divider: A Double-Sided Shelf Built to Your Exact Opening

A USM Haller room divider is a freestanding, double-sided modular shelf that zones an open-plan space while staying accessible from both sides. Klackjoy builds USM-compatible dividers to your exact width and height in a live 3D configurator, so the unit fits your specific opening — no filler gaps, no oversize compromise.

Why a double-sided shelf is the best kind of room divider

A solid partition wall closes a room in and kills the light that makes open-plan living feel spacious. An open shelf does the opposite: it defines two zones — say a bedroom and a home office in a studio — while daylight, sightlines, and air still pass through the frame.

The USM Haller system is ideal for this because it's genuinely double-sided. There's no "front" and "back." The stainless steel frame and chrome-plated brass connector balls look identical from either side, and panels can face either way. Put open shelving toward the living side for books and objects, and closed panels or drawers toward the bedroom side for storage you'd rather not display. One piece of furniture does two jobs and belongs to both rooms at once.

Because the structure is a repeating cube grid, a divider reads as architecture rather than as a bookcase shoved into the middle of a room. That's the look people are actually after when they search for a raumteiler wohnung — a divider that organizes a flat without walling it off.

Custom width and height to fit your exact opening

This is where a made-to-order approach beats buying a fixed catalog unit. Most dividers on the market come in a handful of preset sizes, so you either leave an awkward gap beside a doorway or buy something too big and wedge it in.

Klackjoy dividers are assembled from standard USM tube modules — the valid lengths are 100, 150, 175, 250, 350, 395, 500, 595, and 750 mm on every axis — so you dial in the width and height that match your span. Want a low, waist-height divider that keeps sightlines open across the whole flat? Build it two cubes tall. Need a full-height screen to properly separate a sleeping nook? Stack it higher. Need it to stop exactly at the edge of a window reveal? Compose the width from the module lengths that land on that measurement.

You do all of this in the live 3D configurator: drag the unit to size, add or remove panels, switch a bay from open to closed, and watch the price update in real time before you order.

Depth matters too

A divider is seen from both sides, so depth is a design choice, not an afterthought. A shallow unit sits lightly in a small studio; a deeper one gives you real storage volume and a more substantial architectural presence in a loft. You pick the depth module that suits the room.

Residential zoning, not just office partitions

USM Haller has a long office history, but the double-sided divider is arguably at its best in the home:

• Studios and micro-apartments — carve a bedroom out of a single room without losing light.
• Lofts — break one large volume into living, working, and dining zones while keeping the airy, open feel intact.
• Open-plan living/dining — anchor a sofa from behind and gain display and storage on the dining side.
• Home offices — screen a desk from the living area so work visually "ends" at the end of the day.

Colors help the piece read as furniture rather than office kit. Pure White (RAL 9010) and Light Grey (RAL 7035) disappear quietly; Anthracite (RAL 7016) and Graphite Black (RAL 9011) make a graphic statement; Golden Yellow (RAL 1004) or a proprietary tone like Ruby Red turns the divider into the accent piece of the room.

USM-compatible, factory-direct, 60–70% less

Klackjoy parts are physically compatible with genuine USM Haller — 1:1 dimensions, the same M8 thread on the connector balls — so you can mix Klackjoy into an existing USM unit or extend one you already own. Nothing is proprietary or locked in.

What differs is the price and the buying path. Klackjoy is factory-direct at roughly 60–70% below original USM pricing, designed in a live 3D configurator, and backed by a 10-year structural warranty. For a divider — which is usually a large, multi-bay piece — that difference is the gap between "someday" and "this month."

How to build yours

Open the configurator, set the width and height to your opening, choose which bays are open shelving and which are closed panels or drawers, orient storage toward the side that needs it, pick your color, and order. If you want a bespoke finish that isn't selectable in the configurator — stainless steel panels or a custom fabric front, for example — those are available made-to-order on request.

Frequently Asked Questions

Can a USM Haller shelf be used as a room divider accessible from both sides?

Yes — this is one of the system's strongest use cases. USM Haller is genuinely double-sided: the stainless steel frame and chrome-plated brass connector balls look identical from either side, and panels can face whichever way you choose. As a freestanding room divider you get open shelving on one side and, if you like, closed panels or drawers on the other, so the unit serves both zones it separates. That makes it ideal for splitting a studio into sleeping and living areas, or carving a home office out of an open-plan flat, without building a wall that blocks light and sightlines. Because it's a modular cube grid rather than a single monolithic piece, the divider reads as architecture and organizes the space while keeping it open. Klackjoy builds these units USM-compatible and to your exact dimensions.

How do I get a custom-width room divider that fits my exact opening?

Use the live 3D configurator. Klackjoy dividers are assembled from standard USM tube modules — the valid lengths are 100, 150, 175, 250, 350, 395, 500, 595, and 750 mm on each axis — so you compose the total width and height from those increments to match your span. Drag the unit to size on screen, add or remove bays, switch a section from open shelving to closed storage, choose the depth that suits the room, and the price updates in real time before you order. This is the core advantage over fixed-size catalog dividers: instead of leaving an awkward gap or wedging in an oversize unit, you build a piece that stops exactly where your opening, window reveal, or ceiling line does. If your ideal width falls between modules, the configurator shows you the nearest buildable size so there are no surprises at assembly.

Is Klackjoy actually compatible with genuine USM Haller?

Yes. Klackjoy parts are physically compatible with existing USM Haller at 1:1 — the same dimensions and the same M8 thread on the 25 mm chrome-plated brass connector balls. That means you can mix Klackjoy components into a USM unit you already own, or extend an existing unit rather than replacing it. Nothing is proprietary or locked to a single supplier. The practical benefit is flexibility: start a room divider now, add bays later, or combine it with pieces you bought years ago, and everything bolts together as one system. Klackjoy is USM-compatible and factory-direct at roughly 60–70% below original USM pricing, with a 10-year structural warranty on the frame. It is not an official USM partner, and it doesn't need to be — the compatibility is in the engineering, which uses the same standardized parts the original system is built from.

Is a freestanding open-shelf room divider stable enough?

Yes, when it's sized sensibly. The USM Haller frame is a rigid three-dimensional cube grid, not a stack of separate shelves, so a divider distributes load through the whole stainless steel structure and stands securely on its own. Stability scales with footprint: a wider, deeper unit is inherently more stable than a tall, narrow one, which is why the configurator lets you tune depth and proportions to the room. For a full-height divider in a home, choosing a bay or two of depth gives a reassuring, planted feel. Weight also helps — loading the lower bays with books or closed storage lowers the center of gravity. In situations where a very tall, shallow unit is unavoidable, the frame can be anchored, but most residential dividers are freestanding by design. Build it to the height and depth the configurator suggests for your span and it will stand confidently.

How much does a USM-style room divider cost compared with original USM?

Klackjoy is factory-direct at roughly 60–70% below original USM Haller pricing, so a divider that would be a major purchase from the original brand becomes genuinely attainable. Because a room divider is usually a large, multi-bay piece, that percentage translates into a substantial absolute saving — often the difference between planning the purchase for "someday" and ordering it this month. You see the exact figure before you commit: the live 3D configurator prices your specific width, height, depth, panel choices, and color in real time as you build, with no hidden made-to-order surcharge on the standard configuration. The parts are USM-compatible 1:1 and backed by a 10-year structural warranty, so the lower price reflects the factory-direct model rather than a drop in structural quality. Bespoke extras like stainless steel panels or custom fabric fronts are quoted separately when requested.