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Knape and Vogt 12 inch over travel drawer slide gives file drawers extra travel beyond the cabinet front, so folders clear the face frame and are easier to reach during everyday use. This 8505 Series side mount drawer slide uses ball bearing construction, so the drawer moves on rolling elements rather than plain friction, which supports smooth motion under load in a typical office or shop environment. The slide is unhanded, so the same member design serves either side of the drawer, which keeps layout straightforward during installation and when stocking spares. This model is identified as KV Model #8505 and manufacturer part number 8505P 12, so matching existing installations that specify this series stays direct. The design is a side mount drawer slide within the Side Mount, Ball Bearing Slides class, so it fits projects where slides run along the cabinet sides instead of under the drawer.
This side mount drawer slide uses a side clearance of 1/2 inch plus 1/32 inch minus 0 inch on each side, so cabinet and drawer widths can be laid out with a defined gap that supports smooth movement without racking. The slide height is 3-51/64 inches including the quick disconnect rail, so drawer box side height and notch work can be planned around a known vertical dimension. The recommended fasteners are #7 x 5/8 inch Phillips pan head, which aligns the slide holes with a common screw size and length used in cabinet-grade material thicknesses. A 32 mm pattern is present, so the hole layout matches drilling systems based on the 32 mm standard and supports use in cabinet lines already machined on that spacing. The finish is Anochrome, so the metal surface is coated for a uniform appearance that coordinates with typical cabinet hardware finishes.
This Knape and Vogt 12 inch over travel drawer slide is identified as a file drawer slide, so it suits applications where drawers carry files in cabinets or storage units. The 3-51/64 inch height gives the slide a vertical profile that matches deeper file or storage drawers rather than shallow pencil drawers, which fits layouts where the drawer side needs more bearing engagement. Side clearance of 1/2 inch plus 1/32 inch minus 0 inch each side suits cabinets built to that gap, so installations in office casework or shop cabinets following that standard can use this slide without reworking carcass widths. Because it is a side mount ball bearing slide, it pairs with drawer boxes that have flat, straight sides available for mounting, which is common in file cabinets and lateral storage units. The unhanded design allows the same slide model to serve both left and right sides, which simplifies specifying parts for banks of matching file drawers.
The over travel action on this 12 inch slide carries the drawer beyond full extension, so hanging file rails at the back are brought forward, which helps users read labels and retrieve folders without leaning into the cabinet. The hold-in feature at the closed position works with positive in and out stops, so the drawer closes firmly against its stop and resists rolling forward, which limits accidental openings in high-traffic corridors. The retainer holding 3 bearings per inch of race spaces the ball bearings closely along the track, which distributes load over more contact points and supports smoother running when the drawer is filled with files. Progressive movement on ball bearings coordinates how each member extends, so the motion feels even from closed to over travel, which benefits file drawers that are frequently opened to their full stroke. Factory-attached drawer release clips with quick disconnect drawer members keep the disconnect hardware aligned to the slide, so installers can mount, test, and remove drawers using the built-in release rather than separate parts. The 32 mm pattern ties the slide to a standardized drilling grid, which supports consistent mounting from cabinet to cabinet and helps maintain alignment in long runs of file drawers. The Anochrome finish covers the slide members, so visible hardware inside light-colored cabinets maintains a clean, neutral appearance that works with a range of casework finishes.
The 8505P 12 slide is described as a file drawer slide, so it is intended for drawers that store files in cabinets or similar storage units.
The side clearance of 1/2 inch plus 1/32 inch minus 0 inch each side defines the gap between drawer and cabinet, guiding carcass and drawer width sizing for smooth travel.
The hold-in feature resists bounce back at closure, so file drawers stay shut after closing, helping maintain a tidy cabinet face in offices or work areas.
Over travel allows the drawer to extend beyond full extension, bringing rear file positions forward so folders and contents are easier to view and reach.
The 32 mm pattern aligns the slide holes with 32 mm system drilling, supporting indexed mounting on cabinets machined to that standard spacing.
The 3-51/64 inch height, including the quick disconnect rail, defines the vertical space needed at the drawer side, guiding drawer box side height and any notching.
The Knape and Vogt 12 inch over travel drawer slide 8505P 12 combines a defined side clearance, 3-51/64 inch height, and 32 mm pattern, so cabinet and drawer dimensions can be laid out with specific targets. The side mount, ball bearing design with over travel, hold-in feature, and positive stops supports file drawers that need frequent full-extension use without harsh motion. When a project calls for a file drawer slide identified as KV Model #8505 in a 12 inch length with Anochrome finish, this unhanded 8505P 12 model provides that configuration for both new casework and matching existing installations.
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