Exclusive service plant room for placing 13 AHUs and 8 FDV provides Air supply at designed class, temperature and humidity for the entire facility. Dedicated Air Handling Units for each process area to prevent cross contamination. The required classification of the area achieved through high efficiency filters, 10 micron Pre- filter with 90% efficiency, 3 micron Fine filter with 99% efficiency and 0.3 micron HEPA filter with 99.97% efficiency. Stringent validation protocols for the critical AHU parameters like filter integrity test, recovery, particle count, air-changes, and air velocity Validation and the re-validation program in regular frequency as part of the environmental monitoring quality norms.