3、tandard18-1987(RA97)--MethodsofTestingforRatingDrinking-WaterCoolerswithSelf-ContainedMechanicalRefrigeration(ANSIapproved) Price:$20.00 MemberPrice$16.00Standard20-1997--MethodofTestingforRatingRemoteMechanical-DraftAir-CooledRefrigerantCondensers(ANSIapproved) Price:$19.00 Member