Features: Designed to support up to 100 pounds of weight Concealed undermount construction adds stability and support Provides easy access to the drawer with full extension slides Lever disconnect allows easy removal of the entire drawer system Slides can be installed in either panel (frameless) or face frame cabinets Includes a limited lifetime manufacturer warranty Product Technologies: TANDEM: Blum's TANDEM technology is a culmination all of the features, engineering innovations and end-user benefits that Blum has developed since Its inception. The first time you open and close a fully loaded Blum-equipped drawer, you'll quickly realize that TANDEM is a runner system that is unmatched in quality, style and running action. Blumotion: Blum's patented soft-closing technology is an industry standard, having found its way into the homes, garagesandoffices of customers all across the country. Itsdesign has been adapted to be used in a variety of different hinge and drawer slide systems making it a system you can count on in any application within your home. Specifications: BHMA Certification: Grade 1 Recommended Drawer Length: 21-1/2" Slide Length: 21" Drawer Thickness: 5/8'' Extension Type: Full Extension Slide Type: Concealed Weight Capacity: 100 lbs Material: Steel Cabinet Type: Face Frame, Panel Quantity: 2 Installation and Adjustment Guides Depth Adjustment Height and Tilt Adjustment Side to Side Adjustment Side Stabilisation Assembly Product Variations: 563F3050B: 12 Inch Drawer Slide 563F3810B: 15 Inch Drawer Slide 563F4570B: 18 Inch Drawer Slide 563F5330B (This Model): 21 Inch Drawer Slide