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The Blum METABOX 320K is a steel drawer side and slide kit in White, sized at 18 inches (450mm) with a 4-5/8 inch side height. It is built for painted and white-interior cabinets where the hardware should disappear behind the work, pairing a self-closing ramp mechanism with a 100 lb weight capacity and 3/4 extension travel.
The METABOX 320K is built for cabinet shops running painted or white-laminate interiors at volume. When the interior finish is white, exposed hardware in a contrasting color reads as unfinished work. This kit's White finish keeps the drawer box sides and running gear consistent with the cabinet's color story, so the finished cabinet looks complete from every angle. It suits base cabinet drawers in kitchens, bath vanities, laundry rooms, and built-ins where the box will be seen from the side or front during daily use. The 18 inch length targets standard cabinet depths — common in base cabinet drawer banks — and the 4-5/8 inch side height fits the shallow and mid-height drawer boxes those cabinets typically call for.
The sides and running gear are steel throughout. The White finish is applied at the factory and covers the full visible surface of the side profile, so the installed result is consistent rather than showing bare metal at the top or back edges. The self-closing mechanism is a ramp-style closer that engages over the last inch of drawer travel and pulls the drawer firmly shut. This is a positive close with spring action — it is not a damped, cushioned close. Buyers who need the drawer to decelerate quietly before latching should look to a BLUMOTION-equipped system instead. For white-interior cabinet programs where a clean close is the requirement and noise damping is not, this kit delivers that efficiently.
Cabinet shops building white or painted lines benefit from keeping hardware finishes consistent across every component in the box. Mixing white laminate interiors with silver or zinc hardware creates visible contrast on every drawer pull. Specifying this kit across the program standardizes both the running gear and the finish in one SKU, simplifying ordering and reducing the chance of a finish mismatch on the line. Homeowners finishing a single bath vanity or laundry room project get the same benefit: hardware that reads as part of the cabinet, not an afterthought. The 100 lb capacity handles everything from a full set of pots to a loaded vanity drawer without question.
No. The self-closing ramp on the METABOX 320K is a spring-driven positive close — it pulls the drawer shut firmly over the last inch of travel. Soft-close uses a hydraulic damper to slow the drawer and let it settle silently. If you need damped closing, look for a BLUMOTION-equipped Blum system.
A 3/4 extension slide opens the drawer to roughly three-quarters of its interior depth. On an 18 inch slide, that means the drawer travels approximately 13 to 14 inches — enough to reach most of the drawer's contents, but not the full depth. For complete access to the back of the drawer, a full-extension slide is required.
This is a drawer side and slide kit — it includes both the steel drawer sides and the running gear needed to build and install a METABOX drawer. Check the product spec block for the exact set contents.
No. METABOX is its own Blum drawer system; front fixings, locking devices, and accessories are specific to the METABOX series and do not interchange with LEGRABOX, TANDEMBOX, or other Blum platforms.
Choosing finish-matched drawer hardware is the detail that separates a production line from a patchwork build. This 18 inch METABOX 320K kit in White handles the load, closes reliably, and keeps the interior looking intentional — so the finished cabinet delivers on its design from front to back.
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