Cabinet: 24 gauge steel. Welded construction with seamless corners and burr-free edges. Flange: 22 gauge stainless steel with exposed surfaces in architectural satin finish. One piece seamless construction, 1" wide radiused corners with 1/4" return. Doors: 18 gauge stainless steel. Warp resistant, with full length piano hinge and tumbler lock keyed like other Bradley units.