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The Knape and Vogt 8908 series is an 18 inch full-extension side-mount ball bearing drawer slide rated 500 lb per pair, with a hold-in and hold-out detent that keeps the drawer securely closed or locked fully open until intentionally moved. The zinc finish suits demanding indoor environments where a functional, corrosion-resistant surface matters more than decorative color.
At 500 lb per pair, the 8908 series operates in a completely different load class from the 75–100 lb cabinet slides used in kitchen work. This is the right slide for tool chests, parts drawers, server infrastructure, workbench pull-outs, and industrial storage units where the contents alone can challenge lesser hardware. Full extension means the entire drawer box comes clear of the cabinet opening — the rearmost contents are reachable without leaning in or guessing. The hold-in detent earns its keep when a loaded drawer is pushed shut firmly: it catches and holds instead of bouncing back into the aisle. The hold-out detent is the feature that makes hands-free work possible — open the drawer, feel it click, and both hands are free to sort, load, or retrieve without the drawer drifting closed.
The slide members are steel with a zinc plated finish — the standard protective coating for indoor ball bearing slides exposed to shop conditions, light moisture, and the occasional solvent splash. Zinc is not a stainless or marine-grade finish; this slide is for indoor work. The 8908 series requires 3/4 inch of side clearance per slide, which is wider than the 1/2 inch standard on lighter cabinet slides. Size the drawer box accordingly: the opening width minus 1-1/2 inches total gives the correct box width for this series. Ball bearings run in full-length raceways for smooth, consistent travel under the full rated load.
The 8908 is sized for professional and industrial environments: mechanic's tool storage, cabinet shop assembly benches, commercial kitchen equipment drawers, server room infrastructure, and anywhere a drawer must stay put at both ends of its travel. The non-handed orientation means one SKU covers every slide position in a multi-drawer cabinet — no handed pairs to track. This SKU ships in a bulk pack, which suits shops building multiple units at once. For face-frame cabinets, rear mounting support is required at the back of the slide; confirm bracket compatibility with the 8908 series before ordering.
Per pair — both slides working together carry 500 lb. Do not double the number by counting each slide separately.
Hold-in keeps the drawer closed — it catches when pushed shut and prevents the drawer from drifting or bouncing back open. Hold-out keeps the drawer fully open — it clicks into position when extended and holds there until deliberately pushed closed. Neither feature is a soft-close or a lock; both release with normal force.
The 8908 is a heavier-built slide in a higher load class, and its wider profile requires 3/4 inch of side clearance per side. Build the drawer box 1-1/2 inches narrower than the cabinet opening to hit that number on both sides.
No. The 8908B is non-handed — both slides are identical and either one fits either side of the drawer.
Yes, but face-frame installations require rear mounting brackets to support the back of the slide — the rear of the cabinet side is recessed behind the face frame. Confirm that the bracket is compatible with the 8908 series before ordering.
When the drawer carries serious weight and needs to stay exactly where it is put — closed on the road or open on the bench — the 8908 series in zinc delivers the load capacity, the dual detent control, and the full access that light-duty cabinet slides cannot match.
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