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This is a 28 inch full-extension side-mount ball bearing drawer slide from Knape and Vogt's 8908 series, rated 500 lb per pair with integrated hold-in and hold-out detents, finished in zinc for indoor industrial service.
The 8908 series was designed for drawers that carry real weight repeatedly: machine shop tool drawers loaded with heavy steel stock, service bench drawers stocked with power tools, commercial kitchen pull-outs, and institutional storage applications. At 500 lb per pair, this slide handles loads that would fail a standard 100 lb cabinet slide immediately. The hold-out detent earns its keep in work environments where both hands are occupied once the drawer is open — the slide stays extended until intentionally pushed closed, keeping contents accessible without anyone holding the drawer.
Zinc plating over cold-formed steel is the standard corrosion-resistant finish for side-mount ball bearing slides used in indoor industrial and commercial service. It is not a decorative finish and is not rated for outdoor, marine, or washdown environments. On a slide this heavily built, the zinc is there to protect the steel through years of hard cycling in a shop or service bay, not to match cabinetry aesthetics. The 28 inch length with 3/4 inch clearance per side suits deep utility drawers and worktop pull-outs where standard-cabinet clearance tolerances would be too tight for the slide's robust profile.
With 3/4 inch side clearance required per side, the drawer box must be built 1-1/2 inches narrower than the cabinet opening — wider than the 1 inch allowance on standard 1/2 inch clearance slides. Confirm this before building or ordering drawer boxes, because the 8908's heavier profile needs that extra room. In face-frame cabinets, rear mounting support is required; add the appropriate series-matched rear brackets, sold separately. The slide is non-handed, so both members in a pair are the same part. This SKU ships bulk-pack.
Per pair. Both slides together carry 500 lb — do not double the number by counting each slide separately.
Hold-in keeps the drawer closed until you pull it open. Hold-out keeps the drawer in the fully open position until you push it closed. This slide includes both detents, so the drawer stays put in either position.
No. The hold-in detent prevents the drawer from drifting or bouncing back open, but there is no damper. The drawer does not slow itself near closed.
28 inches is the closed length of the slide. Because this is a full-extension slide, the drawer member travels approximately the full slide length, bringing the entire drawer out to the cabinet face — so the travel is close to 28 inches, but slide length and travel are two separate specs.
This slide is zinc-finished for indoor service. It is not rated for outdoor, marine, or wet washdown environments.
When the job calls for a drawer that carries 500 lb, opens completely, and holds its position at both ends of travel, the 8908 series in zinc is the straightforward choice for indoor industrial and commercial work.
Sold In: 1 Each
