Thank you for your question on the Broan EQLD130SS. If you are ducting the unit horizontally using the 3 1/4" x 10" duct the cfm and sones are as follows: Low 0.8 sones 185cfm, Med. 2.5 sones and 275cfm, High 9.0 sones and 600cfm. If you have further question please contact Technical support at 800-637-1453.
Date published: 2017-11-16