Heavy-Duty Construction & Smooth Soft-Close: Made from high-grade cold-rolled steel with zinc plating for lasting durability. These full-extension slides support loads up to 85 lbs and feature a reliable soft-close mechanism that gently and quietly closes drawers every time, preventing slam and enhancing safety Precise Fit & Complete Hardware for Easy Installation: Designed for a 21” drawer length (533mm) and a cabinet depth between 22.3” to 23.1” (566-586mm). Package includes all necessary mounting screws, adjustable locking devices, rear brackets, and clear, step-by-step instructions to ensure a straightforward, frustration-free installation for both face frame and frameless cabinets Full Extension & Stable, Wobble-Free Operation: Achieve full access with a smooth 455mm (18”) pull-out length. The reinforced design and robust construction ensure stable, side-to-side wobble-free movement even when fully extended, protecting your drawer fronts from scraping against adjacent surfaces Universal Undermount Application & Space-Saving Design: The concealed bottom-mount design saves interior space and offers a clean, modern look. Versatile for use in kitchen, bathroom, office, or storage furniture. Important Note: Ensure proper side clearance (typically 1/2” to 1”) between the drawer box and cabinet interior for optimal function Reliable Support & Satisfaction Guarantee: We stand by our product quality. If you encounter any issues with product performance or installation, please contact our responsive customer service within 24 hours for assistance, replacement, or refund UPC 717332831386 ASIN B07G81P7PP Color Silver Brand Name Knobonly Drawer Type Storage Finish Types Steel Manufacturer Knobonly Material Type Alloy Steel Mounting Type Under Mount Item Type Name cabinet-and-furniture-drawer-slides Number of Items 1 Included Components Case Maximum Weight Capacity 85 Pounds Manufacturer Part Number 533H-LF-DSHH-1Pair