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The Blum METABOX 320K drawer side and slide kit packages a 20 inch steel runner and a 4-5/8 inch steel side profile together in White, giving cabinet shops and installers everything needed to build out a complete, matched drawer in one order.
The METABOX 320K is an economy metal drawer system suited to production cabinet shops building face-frame or frameless cabinets where a coordinated White interior is part of the spec. The 20 inch (500mm) nominal length targets standard base-cabinet depths: confirm your cabinet's usable interior depth suits the 500mm runner before ordering. The 3/4 extension means the drawer opens well for everyday access — silverware, utensils, small tools — but does not bring the full back of the box to the cabinet face. For applications requiring complete access to the back of the drawer, a full-extension runner is the right choice instead. The self-closing ramp makes the drawer positive-close without adding the cost of a damper; it is the correct spec for budget-focused builds where a definite close matters but damped motion is not required.
Both the side profile and the runner are formed steel, White finish. The White finish is intended to coordinate with white-interior boxes and cabinet carcasses — painted or white melamine — so the visible runner and side profile read as part of the interior rather than a contrast element. The 4-5/8 inch side height is a fixed dimension of the METABOX 320K series; it sets the effective side height of the drawer box the kit builds. The METABOX system uses the runner integrated into the side profile, so the slide and the side are not interchangeable with other series or other brands. Replacement parts and accessories must come from the METABOX 320K program.
Production cabinet shops running White-interior lines reach for the METABOX 320K when the project calls for a matched, economy-tier metal drawer system. It also fits remodelers sourcing consistent hardware for a White-interior kitchen refresh, and specification-driven contractors who need the runner-and-side combination in one SKU rather than sourcing components separately. Homeowners replacing a damaged METABOX drawer side or slide in an existing White-finish installation will find this kit maintains the original interior look.
Self-close — a mechanical ramp pulls the drawer positively shut over the last inch of travel. It is not a damped soft-close; the drawer closes with positive engagement rather than a cushioned deceleration. If your project requires damped motion, look for a METABOX variant with a soft-close specification.
This is a 3/4 extension kit. The drawer opens to roughly three-quarters of the nominal length — useful for most everyday-access drawers, but the back portion of the box stays inside the cabinet. Full-extension slides are a separate product class if you need the entire drawer box accessible.
100 lb per kit. That is the capacity as stated for this runner-and-side combination — do not double the number by counting each member separately.
No. The METABOX runner and side profile are engineered together as one system. They are not cross-compatible with other Blum series (such as TANDEMBOX or LEGRABOX) or with other brands' components.
The White finish on the METABOX 320K is designed to coordinate with standard white cabinet interiors. For critical color matching, test against your specific substrate before committing to production quantities.
The METABOX 320K 20 inch kit in White gets the drawer built and the interior looking intentional — runner and side matched, self-close engaged, and a White finish that sits cleanly inside white-interior cabinetry from the first install.
Sold In: 1 Set
