15 Inch Undermount Drawer Slide for Thicker-Sided Drawer Boxes

The Grass Dynapro is a concealed, full-extension undermount drawer slide in the 15 inch length, engineered specifically for drawer boxes with 5/8 to 3/4 inch sides and integrated soft-close. This version of the Dynapro line opens the range up to shops and installers building from thicker hardwood or plywood stock, where the standard 1/2 to 5/8 inch models do not fit the box.

Key Features

• Full extension brings the entire 15 inch drawer box out to the cabinet face, making the full depth of the drawer accessible.
• Thicker drawer side compatibility — made for 5/8 to 3/4 inch (16 to 19mm) drawer sides, covering hardwood-sided and 3/4 inch plywood boxes that the standard version cannot accept.
• Integrated soft-close catches the drawer near the end of travel and settles it shut quietly without a separate damper add-on.
• 100 lb capacity per pair handles heavily loaded small and mid-size drawers with headroom to spare.
• Suits both face-frame and frameless cabinets — face-frame installs require the matching Dynapro rear mounting brackets, sold separately.
• Steel construction with zinc finish running on roller bearings for smooth, consistent travel through years of daily use.

Where This Slide Works Best

The 15 inch length suits smaller base-cabinet drawers, bathroom vanity drawers, and upper-cabinet pull-outs where a shorter nominal depth matches the box. It is the right call for any of those applications when the box is built from 3/4 inch solid hardwood or plywood sides — a common choice for furniture-grade and semi-custom work. At 100 lb per pair, it also handles utility applications like a tool drawer or a spice pull-out that carries more weight than its size suggests. Minimum installation depth is 15-7/8 inches, so confirm the cabinet's interior depth before ordering against shallower cases.

Construction and Fit Details

The Dynapro slide is steel with a zinc finish and rides on roller bearings. Side clearance is 6mm per side — tighter than the 12.5mm required by standard ball-bearing side-mounts — which is part of what makes the undermount profile so clean inside the box. The nominal slide length is 15-23/32 inches closed, and installation depth ranges from 15-7/8 to 17-9/16 inches depending on the rear bracket configuration. The drawer box must be built to Grass's published specification for this Dynapro version: nominal 15 inch length, box width calculated for the 6mm side clearance, the correct bottom recess, rear notch, and drilling for the Dynapro front locking devices. Locking devices are Dynapro-specific and do not interchange with other brands or Grass series; confirm whether locking devices are included with this SKU or need to be ordered separately.

Who This Is For

Custom and semi-custom cabinet shops building drawer boxes from 3/4 inch hardwood or Baltic birch plywood will find this the natural fit — the side-thickness range is what sets it apart from the far more common 1/2 to 5/8 inch Dynapro models. Designers specifying premium concealed hardware for furniture-grade vanities and residential kitchens get full-extension access and soft-close in a 15 inch package that stays completely hidden beneath the box. Contractors replacing slides in existing casework built with thicker-sided boxes will also find this version where the standard model would not seat correctly.

Frequently Asked Questions

The Right Undermount for Thicker Box Construction

When the drawer box calls for 3/4 inch sides and a clean concealed slide, this 15 inch Dynapro closes the gap between standard undermount sizing and the thicker material shops actually build with — full extension, 100 lb capacity, and soft-close in one slide.