Order by 24/7 by web, contact our sales reps or call by phone.
What you need, when you need it, all in one place.
Most orders ship same day.
Advice and support from knowledgeable professionals.
The Knape and Vogt MUV 21-inch undermount drawer slides deliver full extension and integrated soft-close action in a zinc-finished steel pair that fits both face-frame and frameless cabinet construction. Rated 75 lb per pair and designed for drawer sides from 1/2 inch to 5/8 inch thick, these slides suit a broad range of shop-built and production drawer boxes without requiring a separate damper add-on.
A 21-inch undermount slide targets the mid-depth drawer that shows up everywhere in residential cabinetry: the deep base cabinet drawer, the full-depth vanity, the pantry pull-out sitting behind a door. At full extension, the box clears the cabinet opening completely, so nothing at the back of that pots-and-pans drawer stays buried. The soft-close action is integrated into the slide itself, which matters in production settings where adding retrofit dampers to every drawer adds labor and a second part to track. Cabinet shops running mixed face-frame and frameless jobs get an added benefit: one MUV SKU handles both construction types, so the inventory is simpler and reordering is straightforward.
Steel construction keeps the pair rigid under a rated 75 lb load without adding unnecessary bulk beneath the drawer. The zinc finish provides the indoor corrosion resistance that cabinet environments call for, and the understated color keeps the hardware from drawing the eye when a drawer is open. The slides accept drawer sides from 1/2 inch to 5/8 inch thick, which covers standard 1/2-inch Baltic birch and plywood sides as well as the 5/8-inch sides common in production drawer programs. The undermount position keeps the hardware entirely concealed when the drawer is closed and out of the way when it is open, so the finished interior reads as clean wood, not hardware.
Cabinet shops producing mid-size residential kitchens are the core audience: the 21-inch length fits standard 21-inch-deep base cabinets, full extension satisfies homeowner expectations, and the integrated soft-close checks the feature box without adding a second part to the build process. Designers specifying handle-less or high-end interiors benefit from the concealed undermount position and the quiet close. Contractors doing bathroom vanity installs appreciate the dual face-frame and frameless compatibility when a job mixes cabinet styles. The 75 lb per pair rating also suits utility and laundry room drawers where the load is real, not decorative. These slides are for dry, indoor work only; they are not rated for exterior or wet-environment applications.
The drawer box should be built to the 21-inch nominal length that matches the slide. Build the box to KV's published specification, including any rear notch or locking-device drilling requirements — undermount fit is engineered, not forgiving of an unmodified box.
In face-frame installations, the slide's back end typically needs rear support. Check whether your specific face-frame depth requires KV's matching rear mounting brackets, which are sold separately and series-specific to the MUV program.
The soft-close damper is integrated into the slide mechanism. Specific adjustment range details are not confirmed in the available product data — refer to KV's MUV installation documentation for damper behavior.
Undermount slides require one slide per side of the drawer. Confirm the sold-as unit at the point of purchase — the listing indicates a pair is the standard unit for a complete drawer installation, but verify quantity before ordering for multiple drawers.
Push-to-open and soft-close can coexist only in a named combined system. Standard mechanical push-to-open works against the closing mechanism on a soft-close slide. Check the KV MUV accessory line for any compatible combined-function unit before specifying a handle-less front.
When the drawer needs to open fully, close quietly, and fit the widest range of cabinet types and box thicknesses on the job site, the 21-inch MUV pair delivers all of that from a single SKU without the extra step of adding a damper after the fact.
Sold In: 1 Set
