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The Knape and Vogt 8505 Series 18 inch over-travel ball bearing drawer slide is built for file drawers and heavy storage that need more than a standard cabinet slide can deliver. Rated 150 lb per pair with 1 inch of travel beyond full extension and a hold-in anti-rebound detent, it solves two problems at once: the drawer clears the overhang, and it does not bounce back open when pushed shut.
A worktop overhang or a deep face frame cuts into useful drawer travel. A full-extension slide gets the drawer to the cabinet face and stops there, leaving the back corner of the drawer tucked under the lip. The 8505's 1 inch of over-travel pushes past that point, so a drawer full of hanging files or heavy shop tools actually clears the obstruction. This is the same benefit in a file-pull as it is in a tool drawer under a bench: the whole drawer interior becomes accessible, not just the front two-thirds.
The hold-in anti-rebound detent rounds out the picture for file and utility drawers. A loaded file drawer has enough momentum to bounce back open after a firm close. The detent catches and holds it. This is a mechanical stay-closed feature, not a spring close and not a damper; the drawer stays where it is pushed and releases with a normal pull.
Members are cold-formed steel with a zinc finish, the standard corrosion-resistant treatment for side-mount ball bearing slides in indoor environments. Zinc protects the steel through years of daily cycling in an office or shop without the cost of a decorative finish. The 8505 is a working slide: at 3.79 inches tall including the quick-disconnect rail, it has a taller profile than a standard cabinet slide and is sized for the clearances file drawers require. Side clearance is 1/2 inch per side, matching the standard side-mount footprint so the 8505 drops into an existing layout without reworking the drawer box width.
The 8505 Series sits above the standard 100 lb cabinet slide class by design. KV rates it for drawers up to 30 inches wide in the over-travel configuration, which covers most lateral file and heavy storage applications. Cabinet shops working through volume drawer builds will find the Bulk-Pack format practical: no retail clam-shell to strip, no per-pair pricing uplift. The non-handed slide fits both sides of every drawer without left-right inventory splits. Face-frame cabinet installations require rear mounting brackets at the back of the cabinet; those brackets are series-specific and sold separately.
No. The 18 inch measurement is the closed slide length. Because the 8505 is an over-travel slide, the drawer member travels beyond that — approximately 18 inches of nominal travel plus 1 inch of over-travel. Slide length and drawer travel are two different specs.
The 8500 is full extension and supports drawers up to 36 inches wide at 150 lb per pair. The 8505 adds 1 inch of over-travel and is rated for drawers up to 30 inches wide. Both share the same 150 lb load class and hold-in anti-rebound detent — the choice comes down to whether over-travel is needed for the installation.
No. The detent is a mechanical stay-closed catch that prevents the drawer from rebounding after it is pushed shut. There is no damper and no spring assist. The drawer does not slow on its way in; it simply stays where it lands.
No. The 8505 is non-handed, so both slides in a pair are identical. Order the pair count your job requires without tracking orientation.
Face-frame cabinets require rear mounting brackets to support the back end of the slide, since the cabinet side is set back from the face frame. These brackets are 8505-series-specific and sold separately; they do not interchange with rear brackets from other KV series.
When the drawer is loaded and the countertop gets in the way, the combination of 150 lb capacity, 1 inch of over-travel, and a stay-closed detent means the slide earns its keep on every cycle. Order the pair count your project requires.
Sold In: 5 Set
