Zinc Undermount Drawer Slide For Face-Frame and Frameless Cabinets

The Grass Elite Plus 21 inch undermount slide is a concealed, full-extension runner with integrated soft-close, built for drawer boxes with sides up to 5/8 inch thick and suited to both face-frame and frameless cabinet construction.

Key Features

• Full extension brings the entire drawer out to the cabinet face, putting the back of the drawer within easy reach.
• Integrated soft-close catches the drawer near the end of travel and settles it shut quietly every time.
• Roller-bearing carriage provides a smooth, consistent pull whether the drawer is empty or loaded.
• Zinc-finished steel construction delivers reliable indoor durability with a low-profile appearance beneath the box.
• Face-frame and frameless compatibility makes this slide a single-order solution across mixed cabinet programs.

Where This Slide Fits the Job

A 21 inch undermount slide covers the depth range most common in base cabinet work: standard kitchen base drawers, bathroom vanity drawers, and island storage. At 21 inches, the slide accommodates the deeper drawer box that production shops and custom builders reach for when the base cabinet has the interior depth to match. Full extension means nothing stays buried at the back, which matters most in pots-and-pans drawers, utensil drawers, and any application where the homeowner needs to see and reach the full interior without leaning in. The integrated soft-close eliminates the slam in daily kitchen use without requiring a separate add-on damper.

Construction and Finish

Steel slide members with a zinc finish handle the demands of indoor cabinet service without adding bulk beneath the drawer box. Because the slide runs concealed under the box, the zinc finish serves a functional rather than decorative role — protecting the steel and keeping the hardware quiet against the cabinet bottom. The roller-bearing carriage is the same bearing type Grass uses across the Elite Plus family, designed for smooth travel and consistent closing action over years of daily cycles. Rated at 75 lb per pair, this slide is sized for the loaded everyday drawer rather than heavy-duty pull-out applications.

Who Should Specify This Slide

Cabinet shops running mixed face-frame and frameless programs will find the dual compatibility useful — one SKU covers both construction types without a separate order for each. Production builders who want concealed slides with reliable soft-close at a step below the Dynapro price point will get the full-extension access and quiet closing their customers expect. For 3/4 inch drawer sides, Grass offers a separate 19mm Elite Plus version; this model is for boxes built to 5/8 inch or thinner. In face-frame cabinets, the rear of the slide needs support from series-matched rear mounting brackets, which are sold separately.

The Right Slide Keeps the Cabinet Working

Match the 21 inch Elite Plus to a correctly built drawer box, add the rear brackets your cabinet construction requires, and the result is a concealed, full-extension drawer that closes quietly and holds up to daily use.