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This is an 18 inch full-extension side-mount ball bearing drawer slide from Knape & Vogt's 8650 series, rated 150 lb per pair, with an integrated soft-close damper and a zinc finish ready for years of indoor service. It is the slide to reach for when the load outgrows the standard 100 lb class but the application still calls for damped, quiet closing.
Most kitchen and bath drawers are specified on 100 lb slides and never stress them. But deep pots-and-pans drawers, fully loaded utility pulls, and shop drawers carrying iron or tooling routinely push past that threshold once the contents pile up. The 8650 series bridges the gap: it carries the extra weight and still delivers the damped close that finishes the job without a slam. The 18 inch length suits standard base cabinet depth, and full extension means nothing stays hidden at the back of the box. Side clearance is 1/2 inch per side, so the drawer box is built using the same width formula as any standard side-mount ball bearing slide in this catalog.
The slide members are cold-formed steel with a zinc electroplate finish. Zinc is the functional standard for side-mount ball bearing slides in indoor cabinetry: it resists the humidity and contact wear of a working cabinet without adding visual bulk. The finish is not decorative, and it is not stainless — this is an indoor slide. The soft-close module is integrated into the slide assembly, not a clip-on add-on, so the damper stays aligned through the life of the slide. Steel ball bearings run in full-length raceways between the members, giving smooth, consistent travel whether the drawer holds three pounds or 150.
Cabinet shops running production kitchens will use standard 100 lb slides for most of the box, but heavy-drawer positions — base corner pull-outs, pots drawers, built-in appliance drawers, and workshop cabinets — benefit from the 8650's extra headroom. Designers specifying furniture or built-ins where soft-close is a finish requirement and the load is uncertain will find the 150 lb rating gives confidence without stepping up to a specialty heavy-duty format. The Bulk-Pack format makes sense for shops installing the 8650 in batches: order the quantity that matches the run, not a retail pair at a time.
Per pair. Each installed drawer uses two slides, and the 150 lb figure is the combined capacity of that pair — not 150 lb on each individual slide.
The 8650 uses a damper — a cushioned mechanism that catches the drawer near closed and slows it to a controlled, quiet stop. A self-closing ramp pulls the drawer shut with spring tension and can still produce noise under a heavy load. These are two different mechanisms, and the 8650 is the damped version.
The 18 inch measurement is the closed length of the slide. Because this is a full-extension design, travel is approximately equal to the slide length, bringing the entire drawer out to the cabinet face — but slide length and travel are two separate specs, and full extension is what makes them roughly equivalent here.
No. The 8650 series is non-handed, so both slides in a pair are identical. Order one slide per side, and either one installs on the left or the right.
Side-mount slides in face-frame cabinets need rear support because the cabinet side is set back from the face frame. The matching rear mounting brackets for the 8650 series are sold separately — confirm the correct bracket for this series before ordering.
The 8650 series gives shops a soft-close side-mount slide that holds its own when the load is real — 150 lb per pair, full extension, zinc-finished steel, and a damper that settles even a loaded drawer quietly every time.
Sold In: 1 Set
