Thank you for your question on the model RDJUMPU wire jumper kit for the Ultra Green exhaust fans. The RDJUMPU is used with the RDFU radiation fire damper when it is attached to an Ultra Green fan that has a light or humidity sensor included. The RDFU spec sheet is available for download from our web site and it has a list of units it is used on. Please contact the Technical Service Department at 888-336-6151 if you need additional assistance.
Date published: 2015-06-25