Salice Progressa 18" Soft-Close Full Extension 100 lb Undermount Drawer Slide, Zinc, G5U9S457CXF6

18 Inch Undermount Drawer Slide for 3/4 Inch Drawer Boxes

The Salice Progressa+ is an 18 inch, full-extension, soft-close undermount drawer slide built specifically for drawer boxes with sides up to 3/4 inch (19mm) thick — a frameless cabinet runner that handles the heavier box material common in hardwood and thick-plywood construction.

Key Features

• Full extension brings the entire drawer box out to the cabinet face, making the full depth accessible.
• Integrated soft-close catches the drawer near the end of travel and settles it shut quietly without slamming.
• 100 lb weight capacity per pair handles loaded kitchen, bath, and utility drawers with confidence.
• Designed for 3/4 inch (19mm) drawer sides, making it the right fit for thick hardwood and plywood box construction.
• Steel construction with a zinc finish for lasting indoor performance in a fully concealed installation.
• Frameless cabinet mount attaches directly to the flat interior side panel without a face frame.

Where the Progressa+ Earns Its Place

Most undermount slides are sized for 5/8 inch (16mm) drawer sides, which suits dovetailed and standard plywood boxes fine. But shops building boxes from 3/4 inch solid hardwood or thick domestic plywood need a slide engineered around that material, and mixing thickness versions is not an option — the locking devices, spacing, and box-width formula are all built around a specific side thickness. The Progressa+ fills that role at 18 inches, delivering full-extension travel and soft-close damping in a concealed runner that pairs with the heavier box stock without compromise.

At 100 lb per pair, it covers the realistic weight range for kitchen drawers, utensil trays, and moderate-duty pull-outs built from thick material.

Steel, Zinc, and a Concealed Profile

Steel members with a zinc finish give the slide its structural backbone and protect it through years of indoor cycling. Because the Progressa+ sits entirely beneath the drawer box, the finish is functional rather than visible — the drawer sides, front, and bottom are what the eye sees. The integrated soft-close mechanism lives inside the runner body, so there is nothing to snag, misalign, or add separately.

The Right Shop and the Right Cabinet

This slide is the practical choice for frameless cabinetmakers who regularly build with 3/4 inch box material and want a full-extension, soft-close undermount without switching drawer-side thickness mid-production. It also suits renovation and replacement work where an existing 3/4 inch hardwood drawer box needs a concealed runner upgrade in a frameless case. Homeowners spec'ing a custom kitchen with thick-sided drawers will find the Progressa+ a natural fit for 18 inch base cabinet drawer runs.

Because this SKU is the frameless version, it mounts directly to the cabinet side panel. Build the drawer box to Salice's published specification for the Progressa+ series — 18 inch nominal length, the correct box width for the series' side clearance, bottom recess, rear notch, and drilling for the Salice front locking devices, which are series-specific and should be confirmed as included or ordered separately.

Common Questions

Concealed Performance for Thick-Sided Drawer Boxes

When the box is built from 3/4 inch material and the cabinet is frameless, the Progressa+ delivers full extension and soft-close in a concealed runner sized exactly for that combination — no compromises on slide fit, no visible hardware, and 100 lb of working capacity per pair.