Seat mounts 5 1/2 apart on center. The seller is nysalvage and is located in Oneonta, New York. Sink Style Toilet with Wall Mount Tank. Tank with lid 16 1/2tall x 20 1/2wide x 8depth front to back. Vtg art deco ceramic white porcelain toilet bowl tank lid old standard 14-20e both the tank and bowl are marked standard, but the tank is dated 1948 and the bowl is dated 1937.