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Knape and Vogt 20 inch drawer slide identifies this as a 20 inch long, full extension, ball bearing file drawer slide from the KV 8500 Series, so the drawer can open its full length for access to files and stored materials. The slide is classified as a side mount drawer slide, so it is designed to mount to the cabinet sides in typical file and storage drawer applications. The part is described as unhanded, so the same member works on either side and simplifies layout and inventory on the job. The web description states that the model is KV Model #8500, made in USA, which matters when projects call for a specific origin or brand standard. The category lists the product under Side Mount, Ball Bearing Slides, so installers can match it to projects needing ball bearing performance rather than roller or wooden guides.
The product class lists this as a side mount drawer slide, so the cabinet member fastens to the cabinet sides in standard side-mount configurations. The web description specifies a side clearance of 1/2 inch plus 1/32 inch minus 0 inch on each side, which guides the drawer box width so the slide runs properly without binding. The height is given as 3-51/64 inches including the quick disconnect rail, so planners can design drawer box and opening heights that accommodate the slide profile. The 32 mm pattern is noted as present, so this aligns with systems that use 32 mm line boring for cabinet side holes.
The description calls this a 20 inch length slide in the KV Model #8500 family, so it suits drawer boxes that need about 20 inches of travel, common in file and deeper storage drawers. Being a ball bearing file drawer slide, it is aligned with applications where drawers carry file folders or similar materials that are opened and closed repeatedly during daily work. The product category of Side Mount, Ball Bearing Slides means it fits cabinets built with side-mount hardware layouts rather than undermount channels, helping installers match it to existing shop practices. The description notes available finish as Anochrome, and that Ebony Black is special order, so projects that standardize on Anochrome color and texture can match visible hardware inside a run of cabinets.
The web description states that the slide is made in USA, so it can be specified into jobs that call out domestic manufacturing by project documents. The part number 8500B 20 identifies this 20 inch member within the broader 8500 Series, so shops can reorder the same model when expanding or servicing existing installations that already use KV 8500 slides. The unhanded design stated in the product name means a single part serves left and right, helping reduce sorting during assembly and simplifying storage of replacement stock. The classification as a file drawer slide signals that its geometry and features are suited to the deeper drawers used for filing systems and similar office storage layouts.
The web description specifies factory-attached drawer release clips with quick disconnect drawer members, so the drawer can be lifted off the cabinet member by using the clips, which speeds up finishing, adjustment, and service access inside the cabinet. Because the clearance is given as 1/2 inch plus 1/32 inch minus 0 inch on each side, cabinetmakers can machine drawer widths to that allowance so the slide runs smoothly without guesswork. The stated height of 3-51/64 inches including the quick disconnect rail gives a precise vertical envelope, so drafters can position drawer boxes and intermediate rails without interference.
The 32 mm pattern listed in the description means the hole spacing corresponds to 32 mm system layouts, so rows of system holes in cabinet sides line up with the mounting positions and speed installation. The hold-in feature that prevents bounce back is explicitly described, so when drawers are pushed closed, the mechanism helps keep them in that position and reduces unintended opening from light contact. The positive in/out stops described in the features define the end of travel, so the slides consistently stop drawers at the same point, which contributes to even front reveals in a bank of drawers. The retainer detail of 3 bearings per inch of race explains how the bearings are distributed along the slide, supporting smooth and quiet motion each time the drawer is cycled.
The Knape and Vogt 8500B 20 is classified as a side mount drawer slide, so it is designed to mount along the cabinet sides in typical file and storage drawer constructions.
The 8500B 20 drawer slide uses a side clearance of 1/2 inch plus 1/32 inch minus 0 inch on each side, guiding the drawer box width so the slide operates without binding.
The web description specifies a 20 inch length and a height of 3-51/64 inches including the quick disconnect rail, which defines the required cabinet depth and vertical space.
The 8500B 20 is described as a full extension slide, so the drawer can travel its full 20 inch length, exposing stored contents from front to back.
The hold-in feature on this slide is described as preventing bounce back, so drawers stay seated at the closed position and keep fronts aligned in regular operation.
The web description recommends #7 x 1/2 inch Phillips pan head fasteners (BST1/2X7-2C), so installers can match their screw choice to the intended mounting design.
The Knape and Vogt 8500B 20 combines 20 inch full extension travel, side mount configuration, and a hold-in feature to prevent bounce back, so it fits file and storage drawers that need smooth, defined travel. With specified side clearance, 3-51/64 inch height including the quick disconnect rail, and a 32 mm pattern, it supports accurate cabinet layout using known dimensions. Selecting this slide lets shops match existing KV Model #8500 installations or build new work around the same made in USA series.
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