Ward Vacuum unit (Ward Vacuum Jar) is made up of polycarbonate, unbreakable, shatter resistant & autoclavable. ABS is use for other components to withstand hard usage and provide trouble free service over a longer period of time. The Brackets fits directly on the wall. A well proven fluid control trap fitted on the unit automatically and efficiently shuts off vacuum fully, preventing the transfer of liquid to the vacuum regulator, pipeline and pump.