Adding an outdoor rated sink to your BBQ island can transform your grilling station to an actual outdoor kitchen. Perfect for cleaning vegetables, prepping your meat or filling with ice and enjoy a shallow ice chest. The RCS RSNK4 is a beautiful 18-gauge single bowl outdoor rated 23-inch x 18-inch copper undermount sink that features a thick 18-gauge copper construction, hot and cold water pull-down faucet and drain strainer and stopper.