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