Salice Progressa 21" Soft-Close Full Extension 100 lb Undermount Drawer Slide, Zinc, G5U6S533CXF6

Soft-Close Concealed Runner For Frameless Cabinetry at Full Extension

The Salice Progressa+ 21 inch undermount drawer slide is a full-extension, soft-close concealed runner built for frameless cabinet construction. It carries drawer boxes with 1/2 to 5/8 inch sides and is rated 100 lb per pair, making it a strong candidate for loaded kitchen, bath, and casework drawers where a clean, hardware-free appearance matters.

Key Features

• Full extension brings the entire drawer box out to the cabinet face, putting the back of the drawer within reach.
• Integrated soft-close catches the drawer near the end of travel and settles it shut silently without a slam.
• 100 lb capacity per pair handles heavily loaded utility, kitchen, and storage drawers.
• Frameless cabinet mounting fastens directly to the flat cabinet side panel for a clean, direct installation.
• Compatible with 1/2 to 5/8 inch drawer sides, covering the most common range of dovetailed and doweled box construction.
• Steel construction with zinc finish for durable, corrosion-resistant indoor service.

Where This Slide Does Its Best Work

The 21 inch length suits deeper base cabinets and tall drawer stacks — think a five-drawer chest, a deep utility pull-out, or a bedroom dresser where the full drawer depth needs to clear the opening. Full extension means nothing stays trapped at the back: the bin, the utensil tray, or the folded linens come all the way out. The soft-close mechanism is built in, so there is no add-on damper to source or fit — the drawer settles itself quietly on every close. At 100 lb per pair, this slide handles real working loads without stepping up to a heavy-duty line.

Build and Finish Details

Steel members with a zinc finish give the Progressa+ the corrosion resistance needed for years of indoor use. Because the slide mounts beneath the drawer box and stays hidden when the drawer is open, the finish is functional rather than decorative. The 21 inch nominal length determines the drawer box length — build the box to Salice's published specification for this series, including the correct width formula for the drawer side thickness, the bottom recess, and the rear notch for the locking clips. Salice locking devices and fixing clips are series-specific and do not interchange with other brands.

Who Should Specify This Slide

Cabinet shops running production frameless lines will find the Progressa+ straightforward to stock and install: one slide length covers a range of drawer depths when the box is built to spec. Designers specifying handle-less or integrated-pull fronts get full concealment from the undermount position. Homeowners replacing worn slides in a frameless cabinet get a soft-close upgrade rated well above the loads a household drawer typically sees. This is a frameless-only slide — if your cabinets have a face frame, a different model or a rear-bracket-equipped version is the right path.

A Concealed Runner That Keeps the Job Moving

Match the slide to a properly built drawer box, confirm your locking devices and any needed accessories, and the Progressa+ delivers full extension and quiet soft-close in frameless casework without extra parts or extra steps.