Replacement for 671RB
Hi, Can you let me know if this unit is the same size as the 671RB? I need to replace my bathroom fan but don't want to have to cut a larger hole in the ceiling etc. The existing 671RB unit is listed at 90 CFM and 3.0 sones - does it matter that the AN110 is 110 CFM?
Thanks so much for your help!
Thank you for your question on the model 671RB and AN110 exhaust fans. The 671RB has a housing that measures 9” x 9”. The AN110 housing measures 9-1/4” x 10”. As long as you are using four inch rigid duct work and the length of duct work is 13 feet straight or shorter, you should not have a problem. You need to reduce that distance by four feet for every elbow installed. Please contact the Technical Service Department at 888-336-6151 if you need further assistance.
Date published: 2016-03-07