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The Grass DynaPro 21-inch undermount drawer slide delivers full-extension travel with integrated soft-close and a roller bearing system, in a zinc-finish steel body that suits both face-frame and frameless cabinet construction.
A 21-inch undermount slide matches drawer boxes built to the 21-inch nominal length, making it a standard fit for medium-depth kitchen drawers, bathroom vanities, and furniture drawers in that depth range. Full extension is the right call whenever the back of the drawer needs to be reachable without reaching into the cabinet — spice pull-outs, utensil drawers, and file drawers all benefit from the complete access this extension class provides. The soft-close is integrated, not retrofitted, so the damped close is part of the slide from day one rather than an upgrade added later. In face-frame construction, rear mounting brackets support the back of the slide; check that your bracket selection matches the DynaPro series before ordering.
The DynaPro slide is built on a steel body with a zinc finish, a practical combination for indoor cabinetry that balances corrosion resistance with clean, neutral appearance inside the cabinet box. The roller bearing system runs on precision rollers rather than steel ball bearings, which keeps the motion quiet and consistent. This is an indoor slide; the zinc finish is suited to dry cabinet interiors and is not rated for wet or exterior environments. The drawer side thickness range of 1/2 to 5/8 inch accommodates the thinner drawer stock common in frameless production work as well as the standard 5/8-inch sides used across most domestic drawer programs — without stocking two versions.
Cabinet shops running mixed residential projects — some face-frame, some frameless — find the DynaPro's dual compatibility useful because one slide SKU covers both cabinet types without a mid-project switch. Kitchen and bath remodelers specifying 21-inch drawer depths get the full-extension travel and soft-close their clients expect at a load rating that handles real-world kitchen use. Designers calling out undermount hardware for production runs appreciate that the concealed slide leaves a clean, hardware-free look when the drawer is open, and that the integrated soft-close needs no separate accessory to spec. This SKU is sold as a single right-hand cabinet member; pair it with the matching left-hand member and both drawer members to complete a drawer installation.
The DynaPro is compatible with face-frame construction, but face-frame installations require rear mounting brackets to support the back end of the slide. Those brackets are sold separately and must match the DynaPro series — confirm the bracket part before ordering.
This is a single right-hand cabinet member. A complete drawer installation requires one right-hand cabinet member, one left-hand cabinet member, and both drawer members. Order accordingly so all four components arrive together.
Yes. This slide is designed for drawer side thicknesses between 1/2 inch and 5/8 inch, so 1/2-inch sides are within the supported range. Build the drawer box to Grass's published specification for the DynaPro, including the correct box width, rear notch, and locking-device drilling.
Soft-close behavior on undermount slides can vary with drawer weight; a very light drawer may feel different from a fully loaded one. Consult the Grass DynaPro installation documentation for adjustment guidance specific to your drawer weight.
The DynaPro series is compatible with the Grass Tipmatic Soft-close push-to-open system, which combines touch-open convenience with the slide's soft-close action. Tipmatic components are sold separately and are specific to the DynaPro series; they are not interchangeable with other brands' push-to-open hardware.
Full extension, integrated soft-close, and dual cabinet compatibility in a 21-inch undermount — the DynaPro handles the drawer spec so you can move to the next one.
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