Boswell 40 cup coffee percolator. High quality stainless steel construction for years of trouble free use. Stainless steel brew basket and stem make cleaning easy. Removable sight glass for easy cleaning. Locking lid for added safety. Special sensor holds finished liquid at 183°F to 188°F. Can be used to serve hot water for teas or other hot beverages. UL Standard 197 listed and NSF4/ANSI listed.