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The Knape and Vogt 8850 Series is a 16 inch full-extension side-mount ball bearing drawer slide rated 200 lb per pair, with an integrated Force Management soft-close damper that settles even a loaded drawer shut quietly. This bulk-pack SKU is the zinc-finish version, sized for cabinet shops and contractors who need volume quantities of a high-capacity soft-close slide without trading away closing performance.
A standard 100 lb kitchen slide handles most cabinet drawers comfortably, but some applications push past that class quickly. A wide utility drawer loaded with hand tools, a shop drawer carrying heavy stock samples, or a deep pantry pull with canned goods can all approach or exceed 100 lb. The 8850FM is built for those situations. It covers the same side-mount installation footprint as a standard slide but steps up to the 200 lb class, so the load spec is no longer the constraint. The butterfly lever disconnect lets the drawer be lifted free when needed, which matters on a heavy drawer that someone will eventually pull for cleaning or reconfiguration.
The slide members are cold-formed steel with a zinc finish — the workhorse combination for side-mount ball bearing slides in indoor service. Zinc protects the steel through years of daily cycles without adding visual weight to the cabinet interior, where the slides sit mostly out of sight alongside the open drawer. The FM damper module is part of the slide assembly and uses the same finish treatment, so the whole unit arrives ready to install. This is an indoor finish; for environments with moisture, washdown, or corrosive exposure, specify a stainless or coated alternative.
The 8850FM Bulk-Pack suits cabinet shops running production lines where drawer weight goes beyond the standard kitchen class and soft-close is a spec requirement. Designers specifying heavy undermount-style drawers for clients who prefer side-mount hardware, or contractors sourcing for commercial millwork projects where slam noise and load capacity both matter, will find the 200 lb rating and FM damper combination covers the spec sheet cleanly. The 16 inch length fits a cabinet with a shallow-to-mid interior depth. At 3/4 inch side clearance per side — note this is wider than the 1/2 inch on the 8400-series slides — the drawer box needs to be sized correctly before the slides arrive. In face-frame cabinets, add the matching KV rear mounting brackets, sold separately; the brackets are series-specific and not shared with other KV lines.
A self-close spring pulls the drawer shut quickly and without damping — it can still slam under a heavy load. The FM damper is a distinct mechanism: a hydraulic-style cylinder that catches the drawer near closed and controls the final inch of travel, resulting in a quiet, controlled close regardless of how loaded the drawer is.
The 8850FM carries a larger slide profile to handle the 200 lb class rating and house the FM damper module. That profile 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 — not the 1 inch narrower that standard 1/2 inch slides call for. Confirm this before cutting boxes.
No. The 8850FM uses a butterfly lever disconnect designed for its larger profile and load class. The 8400 series uses a standard lever disconnect. The two are not interchangeable, and the different mechanism is part of what makes the 8850FM suited to heavier drawers.
Bulk-Pack means the slides ship loose in a carton rather than in individual retail polybags. It is the preferred format for shops and contractors installing multiple drawers at once. Confirm the pair count per carton at the time of ordering.
Yes. In face-frame cabinets the slide needs rear support because the cabinet side is set back from the face frame. The matching KV rear mounting brackets for the 8850 series are sold separately and are specific to this series — do not substitute brackets from the 8400 or 8500 lines.
When the load is real and the finish environment is standard indoor service, the zinc 8850FM delivers a 200 lb side-mount platform with damped soft-close closing — all in a non-handed, full-extension package that installs on the same side-mount footprint you already know.
Sold In: 1 Set