S?H?p?C? ?o?four?n?T?s?o? ?r?e?O?J? ?K?d?K? ?O?G? ?O??? ?T?S?p?o?n?s?o?r?B? ?e?d??R??O? ???W?1????????Aluminium will not rust, in addition the addition about the PVDF coating signifies the finish colour on the letterbox will never fade or obtain Tea Staining like that connected with Stainless-steel.With regards to assortment while in the litter box