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The Knape and Vogt 8908 series is a 42 inch full-extension side-mount ball bearing drawer slide rated 500 lb per pair, finished in zinc, and fitted with a combined hold-in/hold-out detent for applications where a drawer must stay exactly where it is put. Built for shop benches, heavy storage cabinets, and industrial equipment, it brings a genuinely heavy-duty load class to the standard side-mount format.
A 500 lb drawer that drifts open is a safety problem. A 500 lb drawer that swings shut on a technician mid-service is another one. The hold-in/hold-out detent addresses both: it holds the drawer in the closed position until intentionally pulled, and it holds the drawer in the fully open position until intentionally pushed. Neither position releases accidentally. This makes the 8908 the right choice for shop drawers loaded with heavy tooling, service equipment drawers that must stay open during maintenance, and industrial storage where a sliding drawer has to stay put through vibration or repeated bumps. It is not a locking slide — the detent releases with a normal pull or push — but it is substantially more positive than a free-sliding or hold-in-only design.
The 8908 series is cold-formed steel with a zinc finish. Zinc plating is the standard corrosion protection for heavy-duty side-mount ball bearing slides in dry indoor environments — workshops, utility rooms, commercial equipment bays, and industrial cabinets. It is not a decorative finish, and it is not rated for wet or exterior environments. The slide sits beside the open drawer box; the zinc finish blends with the hardware rather than calling attention to itself. At 42 inches, this is a long slide — the full-length ball bearing raceways run the entire stroke, keeping travel smooth and consistent even when the load is close to the rated maximum.
The 8908 series in this length suits heavy drawers in shop and industrial settings where 100 lb cabinet slides would be undersized. At 42 inches it is sized for deep utility cabinets, tool storage, and equipment drawers that need full access to the rear. The 3/4 inch side clearance per side is wider than the 1/2 inch standard for lighter cabinet slides — build the drawer box 1-1/2 inches narrower than the cabinet opening to leave the correct gap for each slide. In face-frame cabinets, rear mounting support is required; check that the series-appropriate rear brackets are on the order. This is a bulk-pack SKU, sold as a pair.
Per pair. That is the working load for two slides carrying one drawer. Do not double the number by counting each slide individually.
The detent is a mechanical catch — it holds both closed and open positions and releases with a normal pull or push. A positive lock requires a lever or key to release. This slide stays put under normal conditions but is not a security lock.
Slide length and drawer travel are two separate specs. The 8908 is full extension, meaning the drawer member travels approximately the full slide length — the entire drawer clears the cabinet face. Slide length is matched to drawer depth and cabinet interior depth, not to a travel measurement.
No. The 8908 is non-handed — both slides in the pair are identical and fit either side of the drawer.
Side-mount slides in face-frame cabinets need rear support because the cabinet side is set back from the face frame. Add the series-appropriate rear mounting brackets, sold separately, before installing in face-frame construction.
When the drawer is too heavy to leave to chance and the job requires it to hold open during work, the 8908 series in zinc delivers the capacity, the detent, and the full-extension travel to get the job done reliably.
Sold In: 1 Each
