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Knape and Vogt MUV 21 soft-close undermount drawer slides are full extension slides that let drawers travel their usable length, which opens the entire drawer box for access during cabinet work and day-to-day use. These slides are designed as undermount drawer slides, positioning the hardware beneath the drawer, which keeps the sides clear for clean cabinet lines and easier drawer box layout. The product is described for a 5/8 drawer, so it suits drawer box construction built around 5/8 inch side material where that sizing matters for proper slide engagement. A zinc finish is specified, providing a metallic surface that aligns with common cabinet hardware and helps match the look of other zinc-coated components. These slides are part of the Knape and Vogt MUV series, tying into a known product line so installers can match the MUVAB 21 part across multiple cabinet runs.
This Knape and Vogt undermount drawer slide is described for a 5/8 drawer, indicating it is configured around drawer box construction that uses 5/8 inch material at the sides. That detail influences how the slide components relate to drawer side thickness during layout and joinery. The full extension design at 21 inches ties slide length directly to cabinet depth planning, since the slide needs room to reach its travel while remaining supported in the cabinet. Being an undermount drawer slide, the hardware sits beneath the drawer box, changing how installers locate their mounting positions compared with side-mount layouts and affecting jig choice and reference points during installation.
The product is categorized as an undermount drawer slide in the drawer slides and accessories group, placing it squarely in cabinet and furniture drawer applications where concealed hardware is preferred. At 21 inches, this MUVAB 21 undermount drawer slide fits projects sized around that slide length, such as cabinets built with a depth that supports a 21 inch travel path. The description calls out soft-close full extension, so drawers using this slide are set up to open fully and then close with a controlled motion, which can be helpful in kitchens, baths, and shop cabinets where drawers are used repeatedly. The zinc finish matches many common cabinet hardware components, which keeps the visual look of exposed hardware points consistent wherever the slides are visible during service work.
The manufacturer part MUVAB 21 ties this Knape and Vogt MUV 21 soft-close undermount drawer slide to a specific, repeatable configuration, which simplifies reordering and matching slides across multiple cabinets in a run. Because the product is specified for a 5/8 drawer, drawer box width and side thickness can be planned from the start around that value, reducing layout adjustments later in the build. The full extension function at the 21 inch length means that when the slide is installed in a cabinet sized to that length, the drawer box can present its contents along the entire depth, which helps when organizing tools, utensils, or parts. As an undermount drawer slide, the MUVAB 21 keeps hardware off the drawer sides, giving more freedom in side joinery and allowing clean interior surfaces that can simplify finishing and cleaning. The soft-close characteristic also shifts some of the closing effort to the slide mechanism, which can support more controlled operation over repeated openings and closings.
The MUVAB 21 is an undermount drawer slide, so it mounts under the drawer box, supporting concealed hardware layouts common in cabinet and furniture projects.
The SAP description notes it is for a 5/8 drawer, which relates to drawer box construction using 5/8 inch side material when planning the drawer build.
The product name specifies 21 inch slides, so they are suited to cabinet depths that support a 21 inch full-extension travel path.
The web description states full extension, meaning the drawer is intended to travel its usable length so contents at the back are reachable during use.
The Knape and Vogt MUV 21 soft-close undermount drawer slides are described as soft-close, so they are designed for a controlled, damped closing action.
The product description lists a zinc finish, giving the undermount drawer slides a metallic appearance that aligns with other zinc hardware.
The Knape and Vogt MUV 21 soft-close undermount drawer slides combine 21 inch full extension travel, an undermount configuration, and a zinc finish under the MUVAB 21 part number, which suits cabinet projects planned around 5/8 inch drawer box construction. When a run of cabinets calls for consistent undermount drawer performance at this length, using the same MUV series slide across all matching drawer openings keeps specifications aligned from one cabinet to the next. For cabinetmakers and installers sourcing from Wurth Baer Supply, this part ties directly into a recognized drawer slide line focused on soft-close full extension undermount applications.
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