Knape & Vogt 22 Inch Center Mount Drawer Slide vs Prime-Line 22 Inch Center Mount Drawer Slide

Both are 22-inch center-mount slides with 3/4 extension and a 75 lb rating, so they suit the same jobs: light to medium drawers in cabinets and furniture. The Knape & Vogt uses ball bearings and a zinc finish with a positive stop lever; the Prime-Line uses an epoxy coating that resists rust and ships with screws. Owners of center-mount slides in this class report the same weak points on both: sagging at full extension and loosening screws over years of use. Pick the Knape & Vogt for smoother travel and a firmer stop; pick the Prime-Line for damp rooms and a kit that includes fasteners.

• Choose the Knape & Vogt if you want ball-bearing travel and a positive stop lever on a drawer up to about 18 inches wide.
• Choose the Prime-Line if the drawer sits in a humid or damp spot and you want an epoxy finish plus screws in the box.