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Knape and Vogt 20 inch drawer slides in the 8908 series provide a full extension ball bearing slide, so the drawer or pull-out can travel its full length for clear access to stored tools or supplies. The slide is a side mount drawer slide with a 3/4 inch side clearance, giving a defined gap that simplifies layout for cabinets, vehicle builds, or pantry pull-outs using standard carcass construction. A 3 inch height on the slide creates a tall, robust rail that supports heavy loads in demanding applications such as vehicles and large tool boxes. The non-handed design lets the same slide work on either side, which helps streamline ordering and setup on multi-drawer runs. A hold-in/hold-out function, described as lock-in and lock-out, stabilizes the slide at closed and extended positions, helpful when drawers operate under heavy load.
This Knape and Vogt side mount drawer slide uses a defined side clearance of 3/4 inch, so the installer can size the drawer box relative to the cabinet opening with that gap in mind for each side. The manufacturer specifies recommended fasteners as #10 (82 degree) flathead machine screws on the cabinet member, which lets the head sit flush for consistent clearance alongside the slide body. On the drawer channel, recommended fasteners are #10 panhead machine screws, providing a broad bearing surface against the drawer material to secure the moving member. Using the 3 inch slide height as a reference line, installers can position screws along the length of both members to resist twisting when the full extension travel is used. Together, the side clearance, slide height, and fastener guidance support accurate, repeatable side mount installations.
The web description states that this slide is designed to be used in vehicles, tool boxes and large pantry pull-outs, which points directly to applications that see both heavy loads and frequent cycling. In vehicle builds, the lock-out function lets a pull-out stay extended under load while the lock-in function helps resist movement during transit, providing stability for stored equipment. Tool box drawers benefit from the heavy-duty ball bearings that carry the heaviest loads without sticking, giving smooth access even when drawers hold metal tools. Large pantry pull-outs gain from the full extension 20 inch travel, which brings stored items fully forward for visibility and reach. The 3 inch tall side mount profile suits robust cabinet constructions common in these applications, where stronger side rails are preferred.
The heavy-duty ball bearings are described as carrying the heaviest loads without sticking, so drawers loaded with tools or supplies can be operated repeatedly without binding, supporting efficient access during work. The lock-in and lock-out mechanism that extends through the door front allows the user to positively engage or release the slide from the working side, which is especially useful when drawers are deep or mounted in tight vehicle compartments. A non-handed design reduces setup complexity because one Knape and Vogt 20 inch drawer slides part number, 8908B 20, covers both sides of an opening, lowering the chance of installation errors related to left and right parts. The 3/4 inch side clearance gives a specific design dimension, which supports consistent drawer sizing across multiple cabinets or projects. The 3 inch height helps distribute forces along the rail, complementing the heavy-duty classification noted in the SAP description that labels this product as a heavy duty lock in/out unhanded rail.
The Knape and Vogt 8908B 20 is a 20 inch full extension, side mount, ball bearing drawer slide, so it supports smooth travel along the full drawer depth in side-mounted applications.
The 8908B 20 lock-in and lock-out mechanism extends through the door front, allowing drawers to be held closed or fully open under heavy load for safer, controlled access.
The 8908 series slide uses a non-handed design, so the same slide can be installed on either side, simplifying ordering and installation on multi-drawer projects.
The 8908B 20 slide has a 20 inch length, 3/4 inch side clearance, and 3 inch height, providing a defined footprint helpful for cabinet layout and drawer box sizing.
The web description states the slide is designed for vehicles, tool boxes and large pantry pull-outs, so it suits heavy, frequently accessed storage in those environments.
The manufacturer recommends #10 (82 degree) flathead machine screws on the cabinet member and #10 panhead machine screws on the drawer channel for secure mounting.
The Knape and Vogt 20 inch drawer slides 8908B 20 combine a full extension side mount layout with a 3/4 inch side clearance and 3 inch height, giving clear design parameters for vehicles, tool boxes, or large pantry pull-outs. The non-handed configuration, heavy-duty ball bearings, and lock-in/lock-out action align with projects that demand stable, repeatable drawer motion under substantial weight. When a build calls for a heavy duty lock in/out unhanded rail at this length, this 8908 series slide provides a defined, proven format to match that requirement.
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