... .according to the draings 4.can supply free samples single phase filter shell1material:stainless steel,copper,iron.alumininm,copper ... galvanized sheet),stainless steel, copper, brass, aluminum,etcFinish:zinc/chrome/nickel plating,electrophoresis paint,powder coating ,anodize,etcColor:According to ... conform to ROHS environmental requirements electronic metal shell - single phase filter metal shell