This Blum 18" (457 mm) undermount drawer slide uses the BLUMOTION 563 soft-close mechanism that ensures your drawers will never slam shut. The drawer is full extension and features TANDEM smooth running capability. Please note that required screws and locking mechanism (B.T51.1801 Series for standard application or B.T51.1901 Series for added adjustment) are both sold separately.

These 18" Blum soft closing undermount drawer slides come with TANDEM smooth running capability and BLUMOTION 563 soft close mechanism.
TANDEM plus BLUMOTION 563 - 18" (457 mm) full extension, undermount drawer runners,1/2" to 5/8" drawer thickness

Notes:
Screws not included
Inside drawer width MUST equal cabinet opening width minus 42 mm (1-21/32")
For frameless cabinets only (use B.563H4570B for face frame cabinets).
Locking device required (not included):B.T51.1801 Series for standard application orB.T51.1901 Series for added adjustment
Accessories (optional):Template B.T65.1600.01,Rear Mounting Bracket B.295.3750.02,Rear Mounting Block For Pull-out Shelf B.T51.7000.01,Inset Spacer B.T59.A5P0S