48 Inch Full-Extension Ball Bearing Drawer Slide Built for Serious Loads

This is a 48 inch full-extension side-mount ball bearing drawer slide from Knape and Vogt's 8900 series, rated 500 lb per pair, in a zinc finish. It is built for industrial, shop, and heavy storage applications where standard cabinet-class slides simply are not rated for the job.

Key Features

• 500 lb weight capacity per pair — places this slide far above the standard 75–100 lb cabinet class, covering the most demanding storage drawers.
• Full extension — the entire drawer comes out to the cabinet face so every inch of a deep 48 inch drawer box is reachable.
• 48 inch nominal length — sized for extra-deep cabinets, workbenches, tool chests, and industrial storage units.
• Non-handed design — both slides in the pair are identical, so there is no left or right to sort out during installation.
• Zinc finish on cold-rolled steel — the standard corrosion-protective finish for heavy-duty indoor slide applications.
• Bulk-Pack packaging — ordered in trade quantities for shop builds and production environments.

Where a 500 lb, 48 Inch Slide Earns Its Place

A 48 inch slide belongs in large-format storage: workbench drawers in machine shops, industrial tool storage units, server and equipment rack pull-outs, heavy parts storage in manufacturing environments, and utility cabinets in institutional settings. At 500 lb per pair, this slide handles loads that would overstress a standard kitchen or office slide many times over. Full extension means the back of a deep drawer — which can hold a lot of weight when fully loaded — comes all the way out to the face of the cabinet, so nothing stays buried. Standard motion means no damper or spring mechanism: the drawer rides the ball bearings and stays exactly where it is left, which is exactly what a heavy work-drawer should do.

Steel Construction and Zinc Finish

The 8900 series is built from steel, finished in zinc for indoor corrosion resistance. Zinc plating is the workhorse finish in this product class: it protects the steel through years of service in dry indoor environments, handles the grime and incidental contact common in shop and industrial settings, and keeps the slide functional without demanding attention. The 3/4 inch side clearance requirement is wider than the 1/2 inch standard on lighter cabinet slides, which reflects the heavier-gauge construction of a slide carrying this load class.

Who Orders the 8900 Series in 48 Inches

This slide is the choice for professionals who build or outfit heavy storage: cabinet shops building industrial millwork and workbenches, facilities teams specifying equipment room cabinets, shop owners outfitting tool storage units, and contractors installing utility systems in commercial buildings. The non-handed format and Bulk-Pack quantity suit production environments where consistency and speed of installation matter. If the application is a standard kitchen or bath drawer, a lighter-class slide in a shorter length is the appropriate pick. The 8900 series at 48 inches is for the jobs where 500 lb and deep travel are the real requirements.

The Right Slide for Heavy, Deep Drawers

When the drawer is 48 inches deep and the load is measured in hundreds of pounds, the 8900 series in zinc delivers the capacity, the travel, and the straightforward reliability the job requires.