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This 21 inch Grass Dynapro undermount slide is engineered for drawer boxes built from 5/8 to 3/4 inch material — the version to reach for when your shop works in thicker plywood or solid-wood drawer sides. Full extension and integrated soft-close are built in, and the slide is rated 100 lb per pair.
The 21 inch length suits standard base-cabinet drawers — deep enough for pots and pans, spice pull-outs, and file-style utility drawers. The thicker side-thickness range opens this slide to shops that build drawer boxes from 3/4 inch hardwood lumber, solid-wood dovetailed sides, or thicker plywood stock. It is also the right call on any job where an existing design is built around 3/4 inch material and a standard 5/8 inch slide simply will not fit. At full extension, the complete 21 inch drawer clears the cabinet face, so nothing stays buried at the back.
Steel members carry the load through the full travel cycle, and the zinc finish protects the steel through daily indoor use. Because the slide mounts concealed beneath the drawer box, the finish is a working surface, not a visible decorative element. The roller-bearing carriage distributes load evenly across travel and contributes to the quiet, controlled pull this slide is known for in production cabinetry work.
Cabinet shops running solid-wood drawer programs — shaker boxes, face-frame work with 3/4 inch poplar or maple sides, or any production line where drawer side thickness is locked at 3/4 inch — will find this slide covers the spec without modification. Designers spec'ing premium kitchens that pair handle-less fronts with Dynapro locking devices get full-extension access and damped closing in one unit. For face-frame cabinets, add the Dynapro-specific rear mounting brackets; the drawer box must be built to Grass's published specification for this series, including nominal 21 inch length, the correct box-width formula, bottom recess, rear notch, and drilling for Dynapro front locking devices. Rear brackets and locking devices are Dynapro-specific accessories and do not interchange with other brands or drawer systems.
Yes — the stated side-thickness range is 5/8 to 3/4 inch, so standard 5/8 inch boxes built to the Dynapro spec are compatible. The key difference from the standard version is that this slide also accommodates 3/4 inch sides, making it the only option for thicker box construction in this series.
Yes. The soft-close mechanism is integrated into the slide — no separate damper clip or add-on is required. The roller damper is built into the runner and engages at the end of travel automatically.
Confirm the sold-as unit at purchase. Grass Dynapro bulk SKUs in this catalog are sometimes listed as handed left or right singles; if this SKU is a single, you will need to order both a left-hand and right-hand slide to complete one drawer installation.
Dynapro front locking devices are series-specific accessories. Check the product listing for inclusion details; in most Dynapro configurations they are sold separately and must be ordered alongside the slides to complete the install.
Yes. The Cabinet Type attribute covers both face-frame and frameless construction. In a face-frame install, you will need the Dynapro-specific rear mounting brackets to support the back end of the slide — those brackets are sold separately and are not interchangeable with brackets from other slide brands or series.
When the drawer program calls for 3/4 inch sides and you need a concealed, full-extension, soft-close undermount to match, this 21 inch Grass Dynapro slide is the model to order — build the box to spec, add the Dynapro hardware your cabinet construction requires, and the installation moves forward without compromise.
Sold In: 1 Set
