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The Knape & Vogt 8500 Series 30 inch full-extension ball bearing file drawer slide is built for drawers that go deeper and carry more than a standard cabinet slide can handle. Rated 150 lb per pair, it brings the entire drawer fully out to the cabinet face and holds it shut with a hold-in anti-rebound detent once closed.
A 30 inch slide is the right call when the cabinet is deep and the drawer is heavy. Lateral files loaded with hanging folders, deep shop drawers carrying tools, and archive pulls stacked with binders all put real weight on the hardware. The 8500 series is rated for drawer widths up to 36 inches, so a wide lateral file cabinet stays well within spec. The hold-in anti-rebound detent is particularly useful in a file application: a firmly closed drawer full of folders stays put rather than rebounding open. This is not a soft-close slide and not a self-close slide — the detent holds the position but does not pull the drawer shut or damp its closing speed.
The slide is cold-formed steel throughout, with a zinc electroplate finish that resists corrosion through daily indoor use. Zinc is the working standard for side-mount ball bearing slides — it is a functional, durable finish, not a decorative one. The slide members sit beside the drawer box when open, so the finish is mostly out of sight in service. Ball bearings run in continuous full-length raceways between members, giving consistent travel resistance across the full 30 inch stroke even when the drawer is loaded near capacity.
This slide suits cabinet shops outfitting office furniture with deep file drawers, contractors installing lateral file cabinets, and shop owners building heavy storage drawers on a 30 inch interior depth. The 1/2 inch side clearance per side is the segment standard: build the drawer box 1 inch narrower than the cabinet opening and the fit is right. In face-frame cabinets, the rear of the slide needs support — the matching KV rear mounting brackets are sold separately and are specific to the 8500 series. This SKU is the Poly-Pack, one pair per package.
No. 30 inches is the closed length of the slide. Because this is a full-extension design, the drawer travels approximately its full length — bringing the entire drawer clear of the cabinet opening — but slide length and drawer travel are two separate measurements.
Hold-in anti-rebound is a mechanical detent that keeps the drawer closed once shut and prevents it from bouncing back open. It does not slow the drawer during closing and does not pull it shut. Soft-close uses a damper to slow the drawer over the last portion of travel. These are different features, and the 8500 series has the detent only.
No. The 8500 series is non-handed — both slides in the pair are identical and fit either side of the drawer.
Yes, but the rear of the slide needs support. Face-frame cabinets require rear mounting brackets at the back of the cabinet side. Those brackets are sold separately and are series-specific to the 8500 line.
Knape & Vogt rates the 8500 series for drawers up to 36 inches wide, which covers most lateral file applications.
When the drawer is 30 inches deep and loaded with files or heavy contents, this slide brings everything out to the front — and keeps it shut when you close it.
Sold In: 1 Set
