A High-Capacity Concealed Runner Built for 3/4 Inch Drawer Boxes

The Salice Progressa+ 24 inch undermount drawer slide is a full-extension, soft-close concealed runner rated 170 lb per pair — purpose-built for frameless cabinets and drawer boxes with sides up to 3/4 inch thick. At this capacity, it covers the heaviest kitchen drawers, oversize utility pull-outs, and production work where standard 90 to 100 lb undermounts simply run out of headroom.

Key Features

• 170 lb weight capacity per pair — one of the highest ratings in the undermount segment, suited to heavily loaded drawers that outgrow standard-capacity slides.
• Full extension — the entire 24 inch drawer travels to the cabinet face, putting every inch of the interior within reach.
• Integrated soft-close — a built-in damper catches the drawer near the end of travel and settles it shut quietly, without a separate add-on mechanism.
• 3/4 inch maximum drawer side thickness — engineered specifically for boxes built from 3/4 inch hardwood or plywood, a separate model class from 5/8 inch versions.
• Frameless cabinet installation — mounts directly to the flat cabinet interior side for clean, tool-accessible placement on production or custom frameless work.
• Steel construction with zinc finish — corrosion-resistant for years of indoor service, with a low-profile appearance under the drawer box.

Where the 170 lb Rating Changes the Decision

Most undermount slides in the 24 inch length are rated between 90 and 110 lb per pair — enough for a typical kitchen drawer, but short of what a dense pots-and-pans pull-out, a double-drawer bank loaded with canned goods, or a wide utility drawer demands. At 170 lb per pair, the Progressa+ covers those applications without stepping up to a side-mount slide and giving up the concealed look. It also suits shops that want a single high-capacity undermount specification across a run of frameless base cabinets, eliminating the slide-selection step for each drawer.

Steel, Zinc Finish, and What Stays Hidden

The Progressa+ runs on steel members finished in zinc — a functional, corrosion-resistant coating that stands up to indoor use over time. Because this is an undermount slide, the runners sit entirely beneath the drawer box and are not visible when the drawer is open. The finish matters for longevity, not aesthetics. The soft-close damper is integrated into the slide body; there is no separate cartridge to install or replace.

Who Orders This Slide and Why

This slide is the right call for cabinet shops building frameless base cabinets that will carry real weight — production kitchens, commercial-grade residential projects, and any install where the homeowner or designer is loading drawers harder than average. It is also a sound choice for designers specifying a single slide across a mixed drawer lineup: the 170 lb rating covers every drawer in the run without upsizing for individual boxes. The 3/4 inch side-thickness version is the specific model for shops building boxes from 3/4 inch plywood or hardwood; it is not interchangeable with the 5/8 inch version of the same series.

The Right Undermount When Capacity Is the Constraint

When the drawer load exceeds what standard undermounts are rated to carry, the Progressa+ at 170 lb per pair keeps the concealed look intact without compromising on the spec that matters most.