Model 8814R(110CFM): Compatible with Nutone 8814 8663 8673 Unit, 8663RP B Unit, 8664RP B Unit, 8663, 8663F, 8663P, 8663RF, 8663RP B, 8664B, 8664, 6445, 6445B, 6445RP B. Compatible with all fans with the same 9"x9" blade. Based on confidence in quality, the manufacturer offers a 3-year manufacturer defect replacement service for all fans sold. Upgrade: The upgraded pure copper motor has a higher cost and more stable quality than the original aluminum plated copper motor more than a decade ago, and the life is significantly improved. Motoasis is a professional manufacturer of all kinds of motor fans, we always insist on high-quality technology and materials to provide you with excellent products. Save you money&Easy to replace: Compared to purchasing a brand new bathroom fan, this motor component not only saves you a lot of costs, but also provides a simple and fast solution to restore the normal operation of your bathroom fan. Convenient replacement: No need for professional tools or skills, just follow simple steps to complete the replacement. The average installation time is only 10 minutes, greatly saving you time and energy. Quality Assurance: We offer a 3-year quality assurance period for this product, which means that within 3 years of purchase, if any non-human factors cause product malfunctions, we will provide you with free repair or replacement services. Model 8814r Technical Specs: 35W AC, 3.5 SONES, 110CFM airflow, 60HZ frequency. compatible with 97017705 97017706 compatible with nutone 671rb compatible with nutone 8664rp compatible with nutone 8814 compatible with nutone 8814 8663 8673 compatible with nutone 8814r compatible with nutone 8663rp b unit compatible with nutone 8664rp b unit compatible with nutone model 8814r b unit compatible with nutone 8664 Compatible with Broan 750