1.5 TR, 5 TR, 20 TR, 30 TR & 50 TR. Air Cooled Chillers have stainless steel body frame which is surface coated with heat resistant paint to give seamless finishing. Oct 8th, 2020 10:31 AMShare this on :Keywordssurfacegive seamlessAir5 TRheat resistant paintstainless steel body frame20 TR50 TR30 TR