50 CFM BATH FAN REPLACEMENT MOTOR AND COVER: Offers a quick and simple solution to replace the motor in your existing bathroom exhaust fan that is no longer working properly, is too noisy, or simply just needs to be replaced. REMOVES ODORS AND MOISTURE: Operates with 50 CFM at 4.0 Sones and provides sufficient ventilation that quickly and efficiently removes odors and moisture from your bathroom to deliver the quality of air you and your family deserve QUICK DIY INSTALLATION: Requires no wiring and no drywall cutting or repair to allow you to replace your existing motor and cover in just 10 minutes or less COMPATIBILITY: This kit fits 7-1/4" x 7-1/2" metal housings only. Compatible with Broan-NuTone models 688, 696N, 670, 671, 689, 695, 696MFG, 663 and Nautilus models N671, N688. Remove the old cover from your current fan, measure the housing, and find the model # to ensure compatibility.