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IEST-RP-CC002.4

Unidirectional-Flow, Clean-Air Devices

This Recommended Practice (RP) covers definitions, procedures for evaluating performance, and major require-ments of unidirectional-flow, clean-air devices. The RP may be used to define a basis of agreement between cus-tomer and supplier in the specification, procurement, and certification testing of unidirectional-flow, clean-air devices with self-contained motor-blower(s) and powered terminal units with replaceable filters. This document also presents recommendations for recertification of devices owned by the customer, under direction of the customer.


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Institute of Environmental Sciences and Technology [IEST]


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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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