The BLUM TANDEM Plus BLUMOTION 563H Complete Undermount Drawer Slide Kit is a professional-grade concealed slide system engineered for smooth operation, precise adjustment, and long-term durability. Featuring integrated BLUMOTION soft-close technology, these slides provide controlled, quiet closing while maintaining full extension access to drawer contents. This system offers a 100 lb static load-bearing capacity, making it suitable for standard and heavy-use residential drawers in kitchens, bathrooms, offices, and custom cabinetry. The full-extension undermount design keeps hardware hidden beneath the drawer box, delivering a clean, modern cabinet interior while allowing complete access. Designed for installation flexibility, BLUM TANDEM slides feature four-dimensional adjustment, allowing fine-tuning for height, side-to-side, tilt, and depth alignment. Elongated mounting holes enable precise depth adjustment, while bottom-mount holes allow the slides to be mounted directly to a shelf or the cabinet floor when required. The system is compatible with both face-frame and frameless cabinetry. BLUM TANDEM slides are engineered to fit drawer side thicknesses from 1/2 in to 5/8 in, meeting common cabinet construction standards. Rear mounting brackets are included for face-frame applications, while frameless cabinets allow direct mounting without brackets. This complete 6-pair kit is supplied with: (12) TANDEM 563H undermount runners (12) front locking devices for drawer adjustment (12) rear mounting brackets (required for face-frame cabinets) Mounting screws Manufactured by Blum, this TANDEM Plus BLUMOTION system is trusted by cabinet professionals for precision engineering, smooth drawer motion, and dependable performance over years of daily use. Available in 15-inch, 18-inch, and 21-inch lengths to match drawer depth requirements while maintaining consistent performance throughout a project.