These days, most AHUs Have a very secondary filter and that is either an electronic air filter or bag filter which has a filtration grade of all over F9 or MERV13. This kind of filtration grade not only safeguards the AHUs and also presents cleaner air for the men and https://industrial-chiller-hire27047.targetblogs.com/32886669/ahu-hire-can-be-fun-for-anyone