The Purity Outdoor 316 Ultar Shower Mixer is constructed from Lead-free 316 stainless steel, also known as “Marine Grade stainless steel”. It features a 40mm catridge making it suitable for all water pressures from 35kPa.    316 Stainless Steel is the preferred choice for outdoor applications, or for those seeking a premium option for indoor use. With full 316 stainless steel construction including a 316 stainless steel mixer body, faceplate, and lever,  the Purity Outdoor 316 collection provides the ultimate outdoor bathroom experience.