Sink series franke ariane sink width 578 cm sink depth 485 cm bowl sizes 35 x 43 5 x 18 17 x 32 x 13 cm material stainless steel manufacturers colour silver surface glossy fitting width 60cm minimum base unit design 15 bowl sink layout left installation undermount sink number of bowls 15 included in delivery 35 inch basket strainer properties heat resistant acid resistant stain resistant food safe fade resistant rust proof