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The Knape and Vogt 8900 Series is an 18 inch full-extension side-mount ball bearing drawer slide rated 500 lb per pair, built for drawers that carry genuine weight — shop benches, industrial storage, equipment cabinets, and anywhere a standard 100 lb cabinet slide runs out of capacity. It arrives in a zinc finish ready for indoor service.
The 8900 Series sits well above the residential kitchen category. At 500 lb per pair, it is the slide to reach for when the drawer holds mechanics' tools, stacked hardware, bulk fasteners, or production materials. Full extension means the back of the drawer is always accessible — no digging past a partial-open stop. The standard-motion design puts nothing between the drawer and a straightforward pull: no spring, no damper, no detent. The drawer rides the bearings and stays exactly where it is left.
Zinc plating over cold-formed steel is the working standard for side-mount ball bearing slides used in industrial and shop environments. It provides reliable corrosion resistance for dry indoor settings — tool cabinets, parts storage, and shop drawers where the finish stays hidden beside the drawer box. This is a functional, durable surface, not a decorative one. For wet, washdown, or exterior applications, a stainless steel slide is the appropriate choice.
The 8900 Series is the right specification when load matters more than motion features. Cabinet shops outfitting base storage, contractors building heavy tool drawers, and facilities teams specifying industrial parts cabinets will find the 500 lb rating and full extension combination covers the work without overcomplicating the hardware. The non-handed design and Bulk-Pack format reduce setup time when multiple drawers are being built at once. Note that this slide requires 3/4 inch of side clearance per side, so the drawer box must be built 1-1/2 inches narrower than the cabinet opening to fit correctly.
Most standard 100 lb cabinet slides require 1/2 inch of side clearance per side. The 8900 Series is a heavier-built slide and requires 3/4 inch per side — build the drawer box 1-1/2 inches narrower than the cabinet opening rather than 1 inch narrower. Plan for this before cutting drawer stock.
Technically it will work, but it is overbuilt and more expensive than needed for a typical kitchen drawer. The 8900 Series is optimized for high-load applications. For kitchen cabinets, a 100 lb full-extension slide is the practical choice.
No. The 8900 Series is a standard-motion slide — no damper, no spring, and no detent. The drawer travels freely on the bearings and stays wherever it is left.
Bulk-Pack is a volume trade format. Confirm the specific pack quantity on the product detail page before placing your order, as it varies by size.
Yes, but face-frame construction requires support at the rear of the slide. Add the appropriate rear mounting brackets for the 8900 Series — they are sold separately and are series-specific.
When the drawer carries weight that would strain a standard cabinet slide, the 8900 Series delivers the capacity, the full extension, and the clean zinc finish to handle it reliably for the long run.
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