King Slide 6-Pair Box 18" Soft-Close Full Extension 75 lb Undermount Drawer Slide, Zinc, 280-948

King Slide Undermount Drawer Slide Built for 3/4 Inch Drawer Sides

This 18 inch King Slide PURELEAD soft-close undermount is the version engineered for drawer boxes built from 3/4 inch material. Where most undermount slides top out at 5/8 inch drawer sides, this slide accommodates up to 3/4 inch thick hardwood or plywood, making it the right call for shops that build heavier-wall boxes without switching slide families.

Key Features

• Built for 3/4 inch drawer sides — accepts drawer material up to 3/4 inch thick, filling the gap where standard 5/8 inch slides cannot seat correctly.
• Full extension travel — the entire drawer box comes out to the cabinet face, giving complete access to the rear of the drawer.
• Integrated soft-close — a damper catches the drawer near the end of travel and settles it shut silently without slamming.
• 75 lb capacity per pair — sized for standard kitchen and bath drawer loads in residential cabinetry.
• Front locking devices included — clips ship with the slide, so no separate locking device order is needed to get started.
• Face-frame and frameless compatible — works in both cabinet constructions with the appropriate rear mounting hardware.

Where This Slide Solves a Real Problem

The thickness of the drawer side is what determines which undermount version a job needs, and 3/4 inch material comes up more often than buyers expect. Shops cutting drawer sides from 3/4 inch hardwood, shops using thicker plywood for utility drawers, and production lines that standardize on one material thickness rather than stocking two often find that standard undermount slides do not seat properly on the thicker box. This slide is built around that dimension, so the locking devices align and the drawer hangs correctly without shimming or workarounds.

Common applications include kitchen base drawers, bath vanity drawers, and pantry pull-outs where the cabinet shop builds from 3/4 inch stock. At 75 lb per pair, the capacity covers loaded spice drawers, utensil drawers, and similar residential work without margin problems.

Construction and Finish

The slide is steel with a zinc finish, which is the functional standard for concealed undermount hardware. Because the slide mounts beneath the drawer box and out of sight, the zinc finish serves as corrosion protection for indoor service rather than as a decorative element. The minimum installation depth matches the 18 inch nominal length, so measure the cabinet interior before ordering to confirm clearance behind the drawer.

Who Orders This Slide

This SKU fits cabinet shops that build drawer boxes from 3/4 inch material and want a concealed, soft-close runner without stepping up to a heavy-duty slide. It suits residential kitchen and bath work in both face-frame and frameless construction. The included clips simplify ordering for smaller shops or installers who prefer to buy the slide and its locking hardware together rather than sourcing them as separate line items. For 5/8 inch drawer sides, the matching 16mm version of this series is the correct choice — the two versions are not interchangeable.

Frequently Asked Questions

The Right Slide for Heavier-Wall Drawer Boxes

When the job calls for 3/4 inch drawer sides and a concealed, soft-close runner, this slide closes the gap that standard 5/8 inch undermounts cannot fill — clips included, ready to install.