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The Knape and Vogt 8908 Series is a 24 inch full-extension side-mount ball bearing drawer slide rated 500 lb per pair, finished in zinc, with hold-in and hold-out detents that keep the drawer where it belongs whether it is open or closed. It is built for the kind of load that leaves a standard cabinet slide undersized.
The 8908 series is purpose-built for drawers that carry real weight: machinist's tool chests, service cart drawers loaded with power tools, industrial storage cabinets, and heavy-duty workstations. The hold-out detent matters in active work settings — when both hands are inside the drawer and there is no free hand to hold it open, the detent does that job. The hold-in detent matters equally on mobile equipment and in workshop environments where vibration or an accidental bump would send a standard slide's drawer rolling open. Together, the two detents make this a controlled slide in both positions, not just a carrier.
Cold-formed steel members with a zinc electroplate finish give the 8908 the structural backbone its load class demands. Zinc is the working standard for heavy-duty side-mount ball bearing slides: it protects the steel through years of indoor service without adding weight or cost. This is a functional finish on a slide that lives inside a cabinet; it is not a decorative or stainless surface. The 8908 is not rated for wet, outdoor, or washdown environments — zinc-plated steel belongs in dry indoor installations.
The 8908 series requires 3/4 inch of side clearance per side — more than the 1/2 inch nominal clearance of standard cabinet slides — so the drawer box must be built 1-1/2 inches narrower than the cabinet opening, not 1 inch. That extra clearance accommodates the heavier slide profile the 500 lb rating demands. In face-frame cabinets, rear mounting support is required; confirm the matching rear bracket for this series before ordering. Most shops using this slide are fitting it to frameless casework, shop-built cabinets, or steel enclosures where the rear of the slide has direct bearing support.
No. A hold-out detent keeps the drawer open with mechanical friction and releases with a normal push. A lock-out is a positive lock that needs a lever to release. The 8908 uses a detent, not a lock.
Neither. The 8908 has hold-in and hold-out detents — the drawer stays where you put it but does not close on its own or close with damping. It is a free-sliding slide with mechanical detents in both positions.
The heavier rail profile needed for the 500 lb load class takes up more lateral space. Build the drawer box 1-1/2 inches narrower than the opening total — 3/4 inch per side — to get the right fit.
No. The 8908 is non-handed — both slides in the pair are identical and either one fits either side of the drawer.
This SKU ships as a bulk-pack. Confirm the pair or each quantity with the pack contents before placing your order.
When the application has outgrown the 100 lb cabinet class and the drawer needs to stay put in both positions, the 8908 series in zinc delivers the capacity, detents, and non-handed simplicity to get the job done.
Sold In: 1 Each
