Cooke & Lewis Serina Traditional Low level Toilet with Soft close Seat. The Serina is our contemporary take on iconic deco style. Strong angular details make this low-level toilet a showpiece bringing a modern hint of period drama to any bathroom. Finish your suite with one of our complementing Serina ranged basins.. This open back low level toilet from Cooke & Lewis’s Serina range comes with a soft close lid and white seat. It also includes dual flush. Toilet by Cooke & Lewis.