KV 8520 16" Hold-In/Anti-Rebound Side Mount Full Extension 175 lb Ball Bearing File Drawer Slide, Poly-Pack, Zinc, 8520P 16

Zinc-Finish File Drawer Slide Built for Loads That Outlast a Standard Cabinet Class

The Knape and Vogt 8520 series is a 16 inch full-extension side-mount ball bearing file drawer slide rated 175 lb per pair, designed for loaded file, lateral, and heavy storage drawers where a standard 100 lb cabinet slide simply runs out of capacity.

Key Features

• 175 lb load rating per pair — steps well above the standard cabinet class, handling drawers loaded with hanging files, hardware, or dense shop supplies.
• Full extension — the drawer clears the cabinet face completely, putting the back of the box within reach without digging.
• Hold-in anti-rebound detent — a mechanical catch keeps the drawer closed and prevents it from bouncing back open after a firm push.
• Steel ball bearings in full-length raceways — smooth, consistent travel under heavy load, cycle after cycle.
• Non-handed design — both slides in the pair are identical, so there is no left-from-right sorting at the bench.
• Zinc finish over steel — standard indoor corrosion protection, built for years of service in office and shop environments.

Where the 175 lb Rating Changes the Decision

A lateral file drawer stacked with folders, a shop drawer holding heavy tooling, or a storage cabinet under a workbench can load well past what a 100 lb kitchen slide is rated to carry. The 8520 series occupies the space between standard cabinet slides and true industrial hardware, covering the drawer types that crop up most often in commercial office builds and working cabinet shops. At 16 inches, this slide suits compact file pedestals, under-desk cabinets, and shallow storage units where a longer slide would run past the available cabinet depth. Pair it with the hold-in detent and the drawer stays exactly where it is left — closed is closed, even when the drawer is pushed shut with some force.

Materials and Construction

The 8520 series is formed from steel and finished in zinc, the standard corrosion-resistant treatment for side-mount ball bearing slides intended for indoor use. Zinc provides reliable protection in office, shop, and utility environments without the cost of a decorative finish — this slide sits beside the drawer box, mostly out of sight once the cabinet is in service. Ball bearings run in full-length steel raceways for precise, load-bearing travel that holds up under the progressive cycling of a busy file drawer.

Specifying the Right Drawer and Cabinet

The 8520 is a side-mount slide, so the drawer box needs 1/2 inch of clearance per side between the box and the cabinet interior — build the box 1 inch narrower than the opening. The slide is non-handed, which simplifies ordering for multi-drawer cabinets: every slide in the run is the same part. In face-frame cabinet construction, rear mounting brackets are required to support the back end of the slide; brackets for the 8520 series are sold separately and are series-specific. This SKU ships as a Poly-Pack — one pair per bag, ready for single-drawer installs or bench-sorted multi-drawer jobs.

The Right Slide When the Load Demands More

When the drawer is doing real work — loaded files, dense hardware, or heavy shop stock — the 8520's 175 lb rating, full-extension travel, and hold-in detent keep it running reliably without the returns and callbacks that come from under-specifying the slide.