Salice Progressa+ 21" Soft-Close Full Extension 170 lb Undermount Drawer Slide, Zinc, G7U9S533CXF6

Undermount Drawer Slide Built for 3/4 Inch Stock and Heavy Loads

The Salice Progressa+ 21 inch soft-close undermount slide is a concealed, full-extension runner engineered specifically for drawer boxes built from 3/4 inch (19mm) material, carrying up to 170 lb per pair in frameless cabinets.

Key Features

• 3/4 inch (19mm) drawer side compatibility — made for thick-wall drawer boxes where standard 5/8 inch versions will not seat correctly.
• 170 lb capacity per pair — handles heavily loaded utility, pantry, and oversized kitchen drawers well beyond the standard 90 to 100 lb class.
• Full extension — the entire 21 inch drawer box travels out to the cabinet face, putting rear contents within reach.
• Integrated soft-close — a built-in damper catches the drawer near the end of travel and settles it to a silent close.
• Steel construction with zinc finish — functional corrosion resistance for long indoor service life, fully concealed beneath the drawer box.

Where This Slide Earns Its Place

Most undermount slides are engineered around 5/8 inch drawer sides. The Progressa+ in this configuration fills the gap for shops building boxes from 3/4 inch hardwood or plywood — a common choice for heavy-use drawers, deep base cabinet pull-outs, and utility drawers that carry sustained weight. At 170 lb per pair, this slide covers loads that standard undermount classes simply are not rated for: double-bin recycling pull-outs, loaded pots-and-pans drawers, and tool or supply drawers in shop and trade environments. The 21 inch nominal length suits standard base cabinet depths and brings the full box out to the opening at full extension.

Construction and Finish

Steel members with a zinc finish provide durable indoor performance. Because the slide mounts beneath the drawer box, the zinc finish serves a protective rather than decorative role — it stays out of sight when the drawer is open, leaving a clean wood interior visible. The Progressa+ series carries Salice's integrated soft-close damper, which is built into the slide body rather than added as a separate accessory, so there are no clip-on dampers to source or align separately.

Who Should Specify This Slide

Cabinet shops building frameless boxes from 3/4 inch material will find the Progressa+ in this configuration solves the thickness mismatch that occurs when a standard 16mm-version slide is paired with a heavier box. The 170 lb rating makes it a natural call for commercial or semi-commercial kitchens, mudroom and laundry cabinetry, and any drawer carrying sustained heavy loads. Designers specifying handle-less or overlay fronts in frameless frameless construction benefit from the concealed profile; homeowners renovating with thick-wall drawer boxes get the quiet-close behavior expected from premium hardware.

The Right Slide for Thick-Wall Boxes That Work Hard

When the job calls for 3/4 inch drawer sides, heavy loads, and a clean concealed profile in frameless cabinetry, the Salice Progressa+ 21 inch soft-close slide delivers the capacity and compatibility the drawer needs.