Mirror has a one-piece type 430 stainless steel channel frame All exposed surfaces have bright polished finish Select float glass mirror is guaranteed for 15 years against silver spoilage Corners are protected by friction-absorbing filler strips The back is protected by 3/16" (5mm) thick polyethylene padding Galvanized steel back features integral horizontal hanging brackets Locking devices secure mirror to concealed wall hanger Mirror is removable from the wall hanger for reglazing mirror