8850FMB 20 drawer slides from Knape and Vogt are 20 inch full extension, soft-close, ball bearing side mount slides designed for demanding drawer applications. The 200 lb class rating supports heavy drawer loads, so deep storage drawers can operate smoothly without binding under weight. Their full extension action lets the drawer travel the entire slide length, giving clear access to the back of the drawer for tools, hardware, or materials. The non-handed design installs on either side without left or right versions, which simplifies layout and reduces sorting during shop work. A 0.76 inch slide width and 2.09 inch height define the slide footprint, helping plan side clearance and cabinet design around a consistent profile. The ball bearing construction supports stable movement under load, which matters when drawers are built up to the recommended 42 inch width.
The specified side clearance of 0.765 inch plus or minus 0.03 inch defines the required gap between drawer side and cabinet, guiding box sizing for smooth travel. This tolerance window supports predictable fit across multiple drawers built to the same standard. Slide width of 0.76 inch ties directly to that clearance, so installers can base their machining and spacing on a known dimension. A 2.09 inch height affects drawer side design, giving room to plan notch depths or side panel cutouts where needed. Recommended fasteners are #8 x 5/8 inch flathead screws, which gives a concrete reference when selecting screws that seat properly in the slide holes.
Knape and Vogt 20 inch full extension soft-close ball bearing drawer slides are recommended for drawers up to 42 inches wide, which points them at wide kitchen, shop, or storage drawers where racking forces are higher. The 200 lb class rating supports heavy contents in those wide drawers, helping them track true along the slide length. The soft-close module, with patented Force Management Technology, manages closing speed so drawers do not slam at the end of travel. That controlled closure benefits face frame and frameless cabinets alike by reducing impact at the front. Side mount construction fits common cabinet layouts where drawer boxes ride alongside the case, helping retrofit or new builds using standard joinery.
The soft-close module with patented Force Management Technology delivers a low opening pull force, so even heavy drawers begin moving without a hard tug, which is helpful on frequently used storage. At the same time, that module maintains effective dampening at closing, so drawers slow and seat consistently against the front, supporting a uniform reveal across multiple cabinets. Ball bearing construction carries the load along the full extension travel, which helps wide drawers up to the recommended 42 inch width resist twist when opened fully. The non-handed design keeps both slides identical, which streamlines replacement work and reduces the chance of mixing parts in multi-drawer banks. Lever release gives a straightforward way to lift drawers off the slides, supporting shop finishing, transport, and later adjustments without disturbing cabinet alignment.
Knape and Vogt 20 inch full extension soft-close ball bearing drawer slides are recommended for drawers up to 42 inches wide, which supports use on broad storage drawers without switching to a different model.
The slide is a 200 lb class drawer slide, which supports heavy contents in wide drawers so they can open to full extension while maintaining stable movement along the case.
The specified side clearance is 0.765 inch plus or minus 0.03 inch, which sets the gap between drawer and cabinet and guides sizing for repeatable, smooth travel.
The Knape and Vogt 8850FMB 20 slide is a side mount, ball bearing drawer slide, which fits common cabinet layouts where the drawer box rides alongside the cabinet side.
The web description specifies recommended fasteners as #8 x 5/8 inch flathead screws, which align with the slide design for proper seating in the mounting holes.
The 200 lb class slide uses a soft-close module with patented Force Management Technology, which lowers opening pull force while providing dampened closure that prevents drawer slamming.
Knape and Vogt 8850FMB 20 drawer slides bring together a 200 lb class rating, 20 inch full extension travel, and a soft-close module with patented Force Management Technology for controlled drawer action. The specified 0.765 inch plus or minus 0.03 inch side clearance, 0.76 inch slide width, and 2.09 inch height give clear targets for box and cabinet sizing. With side mount construction, lever release, and non-handed design, these slides suit professional cabinet builds and serious shop projects that call for predictable fit and smooth, dampened operation.
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