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The Knape and Vogt GSlide KVGS-2070B is a 21-inch soft-close, full-extension undermount drawer slide rated at 75 lb per pair and designed to work in face-frame and frameless cabinet construction. Roller bearings carry the drawer smoothly, the integrated soft-close brings it home silently, and the concealed mount keeps all of the hardware out of sight when the drawer is open.
A 21-inch slide length suits standard base cabinet drawers — the depth that covers most kitchen drawer runs, bathroom vanities with generous interiors, and furniture pieces where a full-depth box is the design goal. Full extension means the rear of the drawer clears the cabinet face completely, so nothing is buried in the back of a pot drawer, a utility bin, or a deep file pull-out. The 75 lb rating is the working dynamic number per pair, sized for drawers carrying cookware, tools, or stacked files rather than light-duty cutlery.
The dual-construction compatibility is the practical standout here. Shops running a mix of face-frame and frameless work can stock one slide model and install it in either cabinet type rather than maintaining separate SKUs for each. In face-frame installs, the rear of the slide needs support from the cabinet's back panel or an appropriate rear mounting bracket; verify your cabinet depth and rear clearance before building the box.
The slide body is steel with a zinc finish — the standard protective coating for indoor drawer hardware that stands up to years of use in conditioned spaces. Roller bearings carry the drawer member along the cabinet member with a smooth, consistent feel through the full travel range. This is an indoor slide; zinc plating is not rated for wet, exterior, or high-humidity environments.
The drawer box must be built to the GSlide specification: the slide accepts sides from 1/2 inch to 5/8 inch thick, covering both standard 1/2-inch plywood drawer sides and the thicker 5/8-inch material common in dovetail drawer boxes. Build the box to the nominal 21-inch length and follow Knape and Vogt's published width formula and rear notch requirement for this series — undermount fit is engineered, not adjustable after the fact.
Cabinet shops with mixed production — part face-frame, part frameless — benefit most from a slide that installs cleanly in both without a separate SKU for each. Designers specifying a concealed look for kitchen or furniture work get the clean interior that an undermount delivers, with full-extension access and a soft close that suits a premium finish. Contractors doing a full-kitchen install or renovation can keep one slide size in the van rather than sorting through two product lines on site. At 21 inches, this is the length for standard base cabinets, not compact or shallow builds; match slide length to drawer depth before ordering.
Confirm the sold-as unit at the listing level — undermount slides in this catalog are typically sold per pair, but verify before ordering to avoid a half-set.
This slide accepts drawer sides from 1/2 inch to 5/8 inch thick. It is not designed for 3/4-inch sides; if your drawer box uses 3/4-inch material, select the version or series built for that thickness.
In a face-frame cabinet, the back of the slide needs support. Depending on your cabinet's back panel position and depth, you may need rear mounting brackets. Confirm the mounting hardware required for your specific cabinet before installation.
The soft-close mechanism is integrated into this slide — it is not a separate add-on and cannot be switched off. If the application calls for a free-running or push-to-open drawer, select a model without integrated damping.
Yes. Full extension carries the drawer member approximately the full slide length, bringing the back of the drawer to the cabinet face so the entire interior is accessible. This is not a 3/4-extension or 7/8-extension slide.
When the shop runs both face-frame and frameless work and the design calls for concealed hardware with a soft, silent close, the GSlide KVGS-2070B at 21 inches covers both without compromise.
Sold In: 1 Set
