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The Round-in/Round-out VAV unit (VRRF) is a retrofit product designed to simplify upgrading of an existing old-style VariTrane™ units to DDC.
Learn More ›The Round-in/Round-out VAV unit (VRRF) is a retrofit product designed to simplify upgrading of an existing old-style VariTrane™ units to DDC. It includes an 18-gauge cylinder with flow sensing ring and a control enclosure with the following factory-INSTALLED, WIRED, and TESTED options: