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This is the 500mm (20-inch) TANDEMBOX cabinet profile from Blum, the runner member that mounts inside the cabinet and carries the drawer through its full travel. It is sold as a matched left-and-right pair and integrates BLUMOTION soft-close damping directly into the profile, so the drawer settles quietly without a separate add-on damper.
The 500mm nominal length positions this profile as the workhorse choice for cabinets in the 20-inch depth range — a common dimension in kitchen base cabinets, bathroom vanities, and shop storage. Full extension means the drawer box rides all the way out, so a cook reaching for the back of the pots drawer or a technician pulling a deep tool tray gets complete access without tilting or fishing around. The 150 lb capacity handles that kind of load without deflection. This is the cabinet member only: the drawer member (the runner that attaches to the drawer box sides) is a separate component ordered to match. Build out the complete TANDEMBOX system by pairing this cabinet profile with the corresponding drawer members, locking devices, and front fixings for this nominal length.
The profile is formed steel finished in Zinc, the standard TANDEMBOX cabinet-member finish for production and custom cabinet shops. Steel construction keeps the profile rigid under dynamic load across thousands of open-close cycles. The BLUMOTION mechanism is factory-integrated into the runner body rather than clipped on after the fact, so damping performance stays consistent from the first install. No field adjustment of the damper is required at initial setup; front-gap and height alignment follow the standard TANDEMBOX installation sequence.
Cabinet shops running TANDEMBOX systems through kitchens, baths, and built-ins reach for the 500mm cabinet profile when the cabinet depth calls for it. Designers specifying handle-less or push-to-open kitchens build around TANDEMBOX because the system's front-fixing and motion options are engineered together. Contractors and installers replacing a worn runner on an existing TANDEMBOX build order this profile to maintain system integrity — TANDEMBOX components are not interchangeable with other runner families, so matching the series and nominal length matters. Homeowners finishing a frameless cabinet project with production-grade hardware land here when the drawer depth works out to 20 inches.
This is the cabinet member only — the runner that fastens inside the cabinet. A working TANDEMBOX drawer also requires the drawer member that attaches to the box sides, plus locking devices and front fixings. Order all components to the same 500mm nominal length.
BLUMOTION is an integrated damper designed to adapt across a range of drawer weights up to the profile's 150 lb capacity. Heavily loaded drawers still close quietly; very light loads may feel firmer at the catch, which is normal damper behavior.
Blum's TIP-ON and TIP-ON BLUMOTION systems are distinct products that combine push-to-open and damped closing in one unit. A plain BLUMOTION cabinet profile like this one does not include a push-to-open ejector — it is a soft-close runner only. Pair TIP-ON BLUMOTION components if your design needs handle-less fronts.
TANDEMBOX is engineered primarily for frameless (32mm system) cabinet construction. Face-frame installations require the appropriate rear mounting brackets for this series; confirm the bracket availability for 500mm TANDEMBOX before specifying in face-frame work.
The cabinet profile is handed — one runner is shaped for the left side of the opening, the other for the right. This listing ships both members together as a matched pair, so one order is enough for one drawer.
The 500mm TANDEMBOX cabinet profile with BLUMOTION brings full-extension travel and quiet damped closing to the cabinets where mid-depth drawers do the most work. Pair it with the matching drawer members and front fixings to build out the complete system.
Sold In: 1 Set