The Mansfield White Lid Only for 178 Model 178-LID-WHT is a White 18?x10?. The Mansfield White Lid Only for 178 Model 178-LID-WHT weighs about 8lb, and is made of a vitreous china. The Mansfield White Lid Only for 178Model 178-LID-WHT comes with a limited Mansfield lifetime warranty. Mansfield is an American company that?s been in business since 1929, and has been one of the top producers in design, and quality for the past 80 years. They are the largest domestic producer of sanitary ware, and strive to ensure you get the best products available.