Compatible with Nutone 696N-R02 B unit (including 696N-R01 B, 695N-R01 B, 695N-R02 B). Compatible with Broan 688-K, 688-J, 688-H, 688-G,663-G, 663-H, 663-J. Also applicable to other models with fan components of the same size (7-1/4 "x 7-1/8" blades). 70CFM, 2.5 Sones. ▲【Please Note: NOT FIT 696N and 695N without suffix】 Upgrade Pure Copper: The new pure copper motor adopts higher quality materials and technology, directly improving the durability and stability of the product, significantly improving work efficiency, extending service life, and bringing you a more comfortable experience. Simple Installation: No need for professional tools and skills, installation can be completed in simple steps, taking only 10 minutes, without cutting/patching the ceiling or replacing the whole housing and vent, greatly saving your time and money. 3 Year After-Sales Service: We offer a three-year quality assurance period for this product, we promise to provide free repair and replacement services if any non-human factors cause product failure within three years, so that you can feel at ease during the purchase and use process. Quiet And Durable: Using a combination of thickened panels and pure copper motors, it is moisture-proof, durable, and has strong stability. It can provide strong air circulation, operate ultra quietly, and has a rated value of only 2.5 Sones, allowing the bathroom air to remain fresh for a long time while maintaining a peaceful and relaxing environment.