Knape And Vogt 18 Inch Full Extension Drawer Slides

Knape and Vogt 18 inch full extension drawer slides are side mount, ball bearing file drawer slides designed for full extension access. The 8520 series design provides a full extension file drawer slide, so the drawer travels completely out of the cabinet, giving clear access to stored files. The side mount configuration locates the slides on the drawer sides, aligning with common file drawer construction in woodworking shops and commercial casework. These slides are built as non-handed quick disconnect drawer members, so the same member works on either side of the drawer, simplifying layout and reducing part sorting on the bench. The 8520P 18 model is classified as a side mount drawer slide, so it fits workflows built around that hardware class and helps keep slide standards consistent across a project.

Key 8520P 18 Features For Job-Site Efficiency

• The hold-in feature on the 8520 series prevents bounce back, so the drawer stays fully closed against the case, which helps file drawers sit flush in banks of cabinets.
• Positive in and out stops control travel limits, so the slide stops the drawer consistently at full extension and full close, protecting casework from over-travel impact.
• The metal ball retainer holds 3 bearings per inch, providing smooth and quiet motion that supports frequent opening cycles in file drawer applications.
• Progressive movement on ball bearings coordinates member travel, so the drawer opens in one continuous motion, which feels controlled when loaded with files.
• The extended Z-plate uses a high-strength steel alloy, giving the slide a rigid structure that supports file drawer loads in typical cabinet environments.
• Direct access mounting holes let installers drive fasteners straight through the slide, speeding installation on production runs of similar drawer sizes.

Side Mount Fit, Clearances, And Mounting Pattern

The 8520P 18 slide is a side mount ball bearing slide with a specified side clearance of 1/2 inch plus 1/32 inch minus 0 inch on each side, so drawer box widths can be sized precisely for a consistent fit in the opening. The slide height is 3-51/64 inch, including the quick disconnect rail, so designers can plan drawer side heights and clearances above runners around that dimension. A 32 mm pattern is present on the slide, so case sides drilled on a 32 mm system align with the mounting points, which suits cabinet shops using line-boring equipment. Recommended fasteners are #7 x 5/8 inch Phillips pan head screws, tying the installation to a specific screw size and length for predictable hold in typical cabinet materials.

Using 8520 Series Slides In File Drawer Projects

Where These Side Mount File Slides Fit Best

The KV Model #8520 full extension file drawer slide is designed specifically for file drawer use, so it fits projects where drawers must travel fully out for viewing hanging files or document stacks. The side mount layout pairs well with traditional framed or frameless cabinets where slides anchor to the cabinet sides, making it straightforward for both custom woodworking shops and commercial millwork. The unhanded quick disconnect drawer members allow the same drawer member to be used on either side of the drawer, which reduces stocking complexity and keeps replacement or expansion work simple when adding more file drawers later. Made in USA construction positions this slide for jobs where domestically produced hardware is part of the specification or purchasing preference.

Details That Support Alignment And Repeatable Results

The specified 1/2 inch plus 1/32 inch minus 0 inch side clearance on each side supports predictable drawer box sizing, which helps installers hit consistent reveals across banks of file drawers. The 3-51/64 inch height, including the quick disconnect rail, gives a fixed vertical dimension to design around, so drawer sides and opening heights can be coordinated to keep slides centered in the load path. The hold-in feature and positive in and out stops work together to keep drawers from drifting open and to stop at the same fully extended position, which helps alignment of file fronts and label rails across multiple units. Progressive movement on ball bearings and the 3 bearings per inch in the metal ball retainer provide a controlled, quiet slide action that stands up to repeated daily drawer cycles. The extended Z-plate in high-strength steel alloy delivers a rigid profile that supports the running members, which is important when file drawers are built deep and carry concentrated weight from files.

Common Questions About KV 8520P 18 Drawer Slides

Selecting KV 8520P 18 Slides For File Storage

The Knape and Vogt 18 inch full extension drawer slides tie full extension travel, defined side clearance, and a 3-51/64 inch height into one file-drawer-focused slide, so cabinetmakers can standardize on a known setup. The hold-in feature, positive stops, and 32 mm pattern together help align file fronts and slide positions across runs of cabinets. For projects needing a side mount, ball bearing file drawer slide built around the 8520 series layout, the 8520P 18 provides a consistent hardware choice.