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This is a 24 inch full-extension side-mount ball bearing drawer slide from Knape and Vogt's 8850 series, rated 200 lb per pair with an integrated Force Management soft-close damper. The zinc finish and steel construction deliver a hardworking, functional look suited to shop cabinets, utility installations, and any drawer that needs serious load capacity combined with a controlled, quiet close.
Most side-mount ball bearing slides offer soft-close at the standard 100 lb cabinet class. The 8850FM pushes that to 200 lb, which opens it up for drawers that carry real weight: a shop cabinet loaded with hand tools, a utility room pull-out stacked with supplies, a commercial kitchen drawer running full service, or an office storage unit holding thick binders and dense files. The soft-close damper handles those loads without struggling — the Force Management system is sized to slow a heavy drawer, not just a light one. Full extension means the back of the drawer comes all the way to the cabinet face, so whatever is stored at the rear stays accessible rather than requiring the user to dig past everything in front.
The slide is cold-formed steel with a zinc finish — the working standard for side-mount ball bearing slides in heavy-duty interior applications. Zinc protects the steel members against the moisture and handling typical of indoor shop and commercial environments. This is not a decorative finish; the zinc is there to keep the steel in service. The butterfly lever disconnect is also steel, and it stays operable after repeated use on a drawer that gets removed regularly for loading or cleaning. This is an indoor slide — zinc plating is not rated for wet, marine, or exterior use.
The 8850FM is the right choice when the drawer weight rules out a standard cabinet slide and soft-close is still on the requirement list. It suits frameless and face-frame cabinets alike, but face-frame installs need rear support: add the matching KV rear mounting brackets, sold separately, to carry the back end of the slide. The 3/4 inch side clearance required per side is wider than the 1/2 inch standard on lighter KV series, so build or confirm the drawer box width before ordering. The 8850FM is packaged as a Bulk-Pack — confirm the pack quantity on the product page before placing a volume order.
If you are replacing 1/2 inch clearance slides in an existing cabinet, yes — the 8850FM needs 3/4 inch per side, so the drawer box would need to be narrowed by 1/2 inch total (1/4 inch each side) to fit. Plan for this before ordering on a retrofit job.
Yes, but face-frame construction requires rear mounting brackets to support the back end of the slide. KV rear brackets for this series are sold separately and are series-specific — standard or universal brackets will not substitute reliably.
The Force Management damper is engineered for the 200 lb class — it is not a standard-duty damper stretched to a heavier slide. It is sized to slow a heavy drawer, so the close stays controlled at high loads rather than slamming through the damper.
Actuate the butterfly lever on each slide, then pull the drawer straight out. The lever-release design means you do not need to tip or angle the box — useful when the drawer is heavy and awkward to maneuver.
No. The 8850FM is a separate heavy-duty product line from the 8450FM. It carries a different load class (200 lb versus 100 lb), requires 3/4 inch side clearance instead of 1/2 inch, and uses a butterfly lever disconnect rather than the standard lever. The damper is also sized for the heavier class.
When the load is real and a slamming drawer is not acceptable, the 8850FM delivers both capacity and a controlled close in the same zinc-finished, full-extension package — ready to work in any indoor cabinet that demands it.
Sold In: 1 Set