This is an UPGRADED O.E.M. Authorized part, the motor has been upgraded to abide by 2025 U.S codes This 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. OEM Part No. S97012026. 50 cfm 4 sones Official Broan-NuTone Genuine Part. Designed, tested and certified by Broan-Nutone