Thank you for your question on the model QTXE080 exhaust fan. The QTXE080 is designed for installation in ceilings up to a 12/12 pitch (45 degree angle). The duct connector must point up. It cannot be mounted in a wall. The closest fan to the QTXE080, which can be installed in a wall, would be the LP80 which is rated at 1.0 sone. Please contact the Technical Service Department at 800-637-1453 if you need further assistance.
Date published: 2016-02-08