Zinc-Finished Ball Bearing Drawer Slide That Opens Past the Cabinet Face

The Knape and Vogt 8455 series is a 20 inch side-mount ball bearing drawer slide that combines over-travel action with integrated soft-close damping — two features that address real installation problems at the same time. It is rated 90 lb per pair and mounts one slide per side on 1/2 inch of clearance.

Key Features

• Over-travel action adds 1 inch beyond full extension, so the drawer clears countertop overhangs and deep face frames.
• Integrated soft-close damper catches the drawer near closed and settles it quietly without slamming.
• 90 lb weight rating per pair covers a loaded kitchen or utility drawer comfortably.
• Zinc finish on cold-rolled steel members provides standard indoor corrosion resistance for a slide that stays in service.
• Non-handed design means the same slide fits the left and right side of any drawer — no sorting on the bench.
• Poly-Pack packaging includes one pair per bag with mounting hardware, ready for single-drawer installs.

Where the Extra Inch Makes the Difference

A standard full-extension slide brings the drawer flush with the cabinet face. That is enough for open shelving or flush-frame boxes, but fall short when a countertop overhangs the cabinet front or when a deeper face frame pushes the drawer box back. The 8455's 1 inch of over-travel carries the drawer member past the nominal 20 inch slide length, pulling the entire drawer box forward of the obstruction. The back of the drawer, the contents near the rear, and the drawer bottom all become reachable without reaching. That same over-travel benefit applies to kitchen islands, built-in desks under shelving, and any casework where the opening sits behind the finished face.

Zinc Finish in the Cabinet Interior

Zinc plating is the functional standard for side-mount ball bearing slides, and the 8455 wears it well. The finish protects cold-rolled steel members from moisture and oxidation in a typical indoor cabinet environment. Because a side-mount slide sits beside the drawer box rather than beneath it, the zinc surface is mostly out of sight once the drawer is installed. The practical result is a slide that handles daily cycling without visible wear or corrosion over years of indoor service. For outdoor, wet, or food-service environments, a stainless option is the better call.

The Right Fit for This Slide

The 8455 is a natural choice for kitchen drawers that sit under a counter overhang, for built-in workstation drawers that need the extra travel, and for any 20 inch drawer where noise on closing is a concern. The 90 lb per pair rating covers most loaded kitchen drawers — pots, utensils, canned goods — without stepping up to a heavy-duty class. The 1/2 inch per side clearance requirement is standard for this segment, so the box is built 1 inch narrower than the cabinet opening. In face-frame cabinets, rear mounting brackets are required to support the back of the slide; those brackets are series-specific and sold separately. The non-handed design removes the left-right ordering question from volume projects.

A Pair That Handles the Installation Reality

The 8455 in zinc handles the two most common complaints with standard full-extension cabinet slides — not enough travel under an overhang and too much noise on close — in a single non-handed pair rated for real drawer loads.