12 inch full extension drawer slide from Knape and Vogt gives a file drawer full access to its contents, which matters when drawers carry heavy paperwork and need to open completely for clear visibility and reach. This 6500B 12 model is a standard ball bearing, side mount drawer slide, so it supports smooth travel along the cabinet side rather than beneath the drawer. The slide is part of the 6500 series, which identifies its construction style for matching to existing installations on similar drawers in the same project. It is unhanded, meaning the same slide works on either the left or right side, which simplifies stocking and reduces sorting time during installation. A zinc finish covers the slide, giving the steel components a protective surface that holds up in typical cabinet environments where metal parts see repeated movement.
This side mount drawer slide is designed to fasten to the cabinet side, so planning focuses on lateral space rather than under-mount clearances. The recommended fastener is a #8 x 7/16 inch wood screw, identified as WW46000, giving installers a specific screw size and length to match the slide holes and avoid over-penetration in typical cabinet stock. Side clearance is specified as 1/2 inch plus or minus 1/32 inch on each side, which sets the target gap between the drawer box and cabinet side so the ball bearings run freely without excessive play. The slide height is 2-19/32 inches, which helps determine whether the slide fits the drawer side and cabinet opening without interfering with adjacent hardware or structural members.
The 6500B 12 is a 12 inch length slide, so it suits drawers whose depth aligns with that nominal size in cabinets where the case depth allows full extension. As a side mount, ball bearing slide, it works in cabinets built for slides that run along the drawer sides, which is common on file drawers and other storage drawers built with straight, parallel sides. The web description notes a 32mm pattern, meaning the hole layout follows the 32mm system, which helps when the cabinet case already uses that drilling pattern so alignment is straightforward. In file drawer applications, the heavy duty designation supports use where drawers are routinely loaded with paper, folders, and similar materials that add significant weight over time.
The full extension design of this slide means the moving member travels far enough that the back of the drawer clears the cabinet face, which helps keep drawer faces even because stops are built into the slide rather than relying on improvised blocks. The lever disconnect rail lets the installer separate the drawer member from the cabinet member after mounting, which is practical during jobsite work where drawers may be transported separately and then re-hung once cabinets are set. The closed position hold-in detent provides a small resistance at the end of travel, which keeps drawer fronts sitting flush and reduces the chance of partial opening on its own. The zinc finish supports smooth interaction between the ball bearings and raceways because the plated surfaces present a consistent track over repeated cycles in normal interior use. The slide height of 2-19/32 inches and side clearance of 1/2 inch plus or minus 1/32 inch together guide drawer box construction, so shop-built drawers can be sized correctly to run square and avoid racking.
The 6500B 12 is a Knape and Vogt side mount, standard ball bearing, full extension drawer slide, so it supports drawers from the sides while providing smooth, complete travel.
The slide length is 12 inches, which suits drawer boxes built to that depth in cabinets where the interior allows full extension movement.
The slide uses 1/2 inch plus or minus 1/32 inch side clearance on each side, so drawer width is set to maintain a consistent running gap within that range.
The slide height is 2-19/32 inches, which helps determine drawer side height and placement in the cabinet opening to avoid interference.
The built-in lever disconnect rail lets the drawer member release from the cabinet member, making removal and reinstallation straightforward during construction or service work.
The slide has an available zinc finish, providing a consistent metallic appearance and a plated surface suited to typical interior cabinet environments.
This Knape and Vogt 12 inch full extension drawer slide pairs heavy duty, side mount construction with a 32mm pattern, so it fits well into cabinet runs already drilled on that system. With defined side clearance, height, and a lever disconnect rail, it supports predictable drawer sizing and straightforward installation for file drawers and similar storage.
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