DampersFaq-QA19

Jul 10, 2018, 21:11 PM
What does the UL Certification Mark signify?
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The UL Classification mark simply signifies that a damper was produced under UL’s Follow-Up Service Program and therefore met the requirements of the manufacturer’s Follow-Up Service Procedure when it left the factory. As such, any changes to the damper after it leaves the factory fall outside the scope of the UL’s Follow-Up Service Program.
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