Houzer 629808 Wirecraft Bottom Grid 22-3/8" x 16-1/2" is made of T-201 stainless steel with protective feet. This sink bottom grid helps reduce noise while cushioning fragile dishes and protects your sink surface from scratches. This bottom grid is custom-designed to fit Houzer Quartztone granite sink models G-300 and G-300U. Houzer 629808 Wirecraft Bottom Grid comes with a 1-year limited warranty.