4" Rectangle Shelf Clamps (Set of 2) Features: Easy Installation! Recommended up to 16" deep corner shelves Not Recommended for Straight Shelves more than 4 3/4" Deep Recommended weight capacity 45 Lbs Coming in a finish of either brushed nickel or chrome, these handy little rectangle clamps easily pull their weight when it comes to shelving. With a recommended weight capacity of 45 pounds, these clamps work best with 16" deep corner shelves, and should not be used with straight shelving more than 4 3/4" deep. A breeze to install, the rectangle clamps are your ticket when it comes to hanging shelves! Shipping is quick with FedEx, with insurance guaranteeing a safe delivery!