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The Knape & Vogt 8505 series is a 12 inch side-mount ball bearing file drawer slide rated 150 lb per pair, built for compact file drawers and storage applications where the drawer must clear past the cabinet face to reach everything inside. The 1 inch of over-travel extends the drawer beyond full extension, and the hold-in anti-rebound detent keeps it shut between uses.
A standard full-extension slide brings the drawer face flush with the cabinet opening — useful, but it still leaves the rearmost contents partially shadowed behind a face frame or countertop lip. The 8505 pushes the drawer one additional inch past that point. In a shallow 12 inch drawer installed under a worktop or behind a deep face frame, that inch is often the difference between reaching the back row without fishing for it and having to empty the drawer to find what you need. It is also useful in compact base cabinets and shop drawers where the opening is tight and the drawer sits close to an obstruction when open.
The 8505 series uses progressive ball bearing movement — the bearings are distributed to provide smooth, even resistance across the full travel range rather than bunching load at the front. The steel members carry a zinc finish that handles the wear of a working cabinet without the cost of a decorative coating. Each pair ships in a poly-pack with mounting hardware. The 1/2 inch side clearance requirement is the same as the standard KV 8400 series, so the drawer box sizing calculation is unchanged if you are stepping up from a lighter slide in the same cabinet run.
The 8505 in 12 inches suits anyone putting a file-weight or tool-weight drawer into a compact cabinet: small lateral file pedestals, under-desk storage boxes, shop base cabinets with shallow drawers, and any installation where the slide length is constrained but the load is not. The 150 lb class per pair handles dense loads that would approach or exceed a standard 100 lb cabinet slide's rating. Cabinet shops running face-frame construction will find the over-travel especially useful; the extra inch compensates for the setback that face frames impose on usable drawer depth. For face-frame installs, add the matching KV rear mounting brackets, sold separately, to support the back of the slide.
No. 12 inches is the closed length of the slide. The drawer travels the full 12 inches plus 1 additional inch of over-travel — so the drawer member extends approximately 13 inches from the back of the cabinet.
The hold-in anti-rebound detent is a mechanical catch that keeps the drawer closed and prevents it from bouncing back open when pushed shut firmly. It does not assist closing and it does not dampen the close. Soft-close uses a damper to slow the drawer at the end of travel — this slide does not include a soft-close feature.
No. The 8505 is non-handed, so both slides in the pair are the same part. Order one pair per drawer.
Yes, but face-frame installations require rear mounting brackets to support the back end of the slide. Those brackets are series-specific and sold separately — the standard KV rear mounting bracket for this series will handle the job.
The 8505 series uses quick-disconnect drawer members. Extend the drawer fully and it lifts free from the cabinet rails without tools.
When the drawer is short, the load is real, and every inch of access matters, the KV 8505 in 12 inches delivers the load class of a file slide and the clearance of an over-travel design in a length that fits where standard heavy-duty slides often do not.
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