30 Inch Undermount Drawer Slide For Heavy-Load Frameless Cabinetry

The Salice Progressa+ is a 30 inch full-extension concealed undermount slide with integrated soft-close, engineered for frameless cabinets and rated 170 lb per pair — a heavy-duty capacity that puts it well above the standard 90 to 110 lb undermount class.

Key Features

• 170 lb capacity per pair — heavy-duty rating handles oversize drawers, deep pantry pull-outs, and heavily loaded base cabinets without breaking a sweat.
• Full extension brings the entire 30 inch drawer out to the cabinet face so every inch of the box is reachable.
• Integrated Smove soft-close catches the drawer near the end of travel and settles it shut with a quiet, controlled close.
• Designed for 3/4 inch drawer sides — the slide geometry and locking-device spacing are engineered around 3/4 inch (19mm) material.
• Frameless cabinet construction — mounts directly to the cabinet side panel, no face-frame adapter required.
• Steel construction with zinc finish for durable indoor service, fully concealed beneath the drawer box when the drawer is open.

Where This Slide Earns Its Place

A 30 inch slide at 170 lb covers the applications where standard undermounts run out of headroom. Pots-and-pans drawers stacked with cast iron, deep file pull-outs in a working office, and oversized pantry base drawers loaded with canned goods all fall comfortably within this rating. The full-extension travel means a 30 inch drawer box comes completely clear of the cabinet opening — the back corner of the drawer is as reachable as the front. Shops building kitchen and bath casegoods to a higher weight specification will find this slide fills that gap in the Progressa+ family without stepping up to a side-mount or rail system.

Build and Finish Details

Steel members with a zinc finish give this slide reliable corrosion resistance for dry indoor environments. Because the Progressa+ is a concealed undermount, the zinc finish is functional rather than decorative — it is hidden beneath the drawer box in use. The integrated Smove damper is a Salice-engineered liquid damper built into the slide body, not an add-on clip. Locking devices and rear brackets for this series are Progressa+-specific; they do not interchange with other Salice lines or other brands. Build the drawer box to Salice's published specification for this series: nominal 30 inch length, the correct box-width formula, bottom recess, rear notch, and the drilling pattern for the Progressa+ front locking devices.

Who Should Specify This Slide

Custom cabinet shops building frameless kitchens with 3/4 inch hardwood or plywood drawer boxes will find the Progressa+ a practical match — the 19mm side-thickness version fits the box stock already on the floor without a material change. Designers specifying oversized base drawers for kitchen renovations gain a concealed slide with a rated capacity that handles real-world loads, not just a nominal spec. Contractors installing high-specification millwork who need a dependable, full-access undermount at 30 inches with soft-close on every drawer will find this slide ready to order in that exact configuration.

Common Questions

A Concealed Slide That Carries the Full Load

When a project calls for a 30 inch drawer that needs to carry real weight, close silently, and stay completely hidden, the Progressa+ delivers all three without compromise — order one pair per drawer and build the box to spec.