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The Knape & Vogt 8500 series 28 inch full-extension ball-bearing drawer slide is a side-mount workhorse engineered for file drawers, deep utility drawers, and any cabinet pull-out where a 150 lb load rating and full rear access are non-negotiable. Sold in a bulk pack for shop and cabinet-shop ordering, it arrives ready to put to work without the retail packaging overhead.
File drawers are the defining application here: a fully loaded legal- or letter-size hanging-file drawer places the load near the front of the box and puts constant cycling stress on the slide pair. The 8500 series is designed around that load profile. Beyond file cabinets, the 28 inch length and 150 lb capacity suit deep base-cabinet drawers in shops and offices, map and blueprint storage, heavy parts-bin pull-outs, and any drawer where standard 100 lb slides have proven marginal. The 1/2 inch side clearance per slide is the standard ball-bearing geometry, so the slide drops into any opening sized for conventional side-mount hardware.
Steel members with a zinc plating protect the slide through years of indoor service and keep the hardware visually unobtrusive inside the cabinet. Zinc plating is the right choice for dry, conditioned interior environments — office buildings, shops, and residential cabinetry. The ball-bearing raceways run the full length of the slide, so there is no soft spot mid-travel where load stress concentrates. The hold-in anti-rebound detent is mechanical and maintenance-free: it holds the closed position under vibration or accidental contact without a lock, and releases with a normal pull.
Cabinet shops building office furniture runs, contractors fitting out filing rooms, and commercial woodworkers speccing lateral file units are the primary buyers for this bulk-pack configuration. The non-handed design means a single SKU covers an entire project without tracking left and right inventory separately. For a shop cycling through dozens of file or utility drawers, the bulk pack eliminates per-pair retail overhead and keeps the bench supplied without reordering interruptions.
Per pair — that is the working load for one complete drawer installation using both slides together.
No. It is a position catch that holds the closed position and prevents rebound — a normal pull releases it. It is not a keyed or lever-actuated lock.
It can, but face-frame construction sets the cabinet side back from the frame face, so the rear of the slide needs rear mounting support. Add the appropriate rear mounting brackets for face-frame installs; frameless cabinets take a direct side-panel screw without extra hardware.
The bulk-pack configuration is hardware focused — confirm included fasteners against the pack contents before ordering if screws are part of your install plan.
The zinc finish handles standard indoor conditions well. For wet, washdown, or high-humidity environments, a stainless steel slide is the better call.
A file drawer that gets pulled open and pushed shut dozens of times a day needs a slide rated and built for that rhythm — full extension to reach every folder, 150 lb capacity to handle the loaded box, and a detent that keeps it closed the rest of the time. The 8500 series in 28 inches delivers all three in a bulk format that keeps production moving.
Sold In: 5 Set
