BATH FAN REPLACEMENT COVER: Allows you to personalize the ambience in your bathroom with a color changing LED light and wireless Bluetooth speaker. Bath fan not included, cover only. COLOR CHANGING LED LIGHT: Customize colors, adjust brightness and create endless lighting scenes with a smart phone or tablet, using the ChromaComfort app. App does not control the fan on/off. WIRELESS BLUETOOTH SPEAKER: Enjoy the crisp, bold sound of the Sensonic Bluetooth speaker with your favorite music apps such as Spotify, Apple Music, Pandora, Amazon Music, and more. Listen to your favorite music, podcasts, news or audio books. EASY TO INSTALL: Quick connect plug allows for a tool-free and wire-free installation in 5 minutes or less with no ceiling patching or cutting required. To find the size of your fan and grille cover, measure the length and width of the metal housing. Or, you can find the model number stamped inside the metal housing COMPATIBLE: Cover measures 10-1/4" x 9-3/4" x 2-3/8" and includes 2 sets of springs for use with multiple Broan or NuTone bathroom fan models. Fits bath fans with a 7-1/2" x 7-1/4" housing, 8"x7-1/4" housing, or 8-1/4"x 8" housing. Compatible with the following bathroom fan models: Broan 576, 670, 671, 674, 676, 678, 679, 680, 683, 684, 688, 689, 770, 771, 784, 679L, 683C, 683L, E050, E070, ED50L, HD50, HD50L, HD80, HD80L; NuTone 695, 696N, 696N0, 763, 6950, 50NT, 684NT, 763N, 763NC, 80NT, 80NTE, HD50LNT, HD50NT, HD80LNT, HD80NT; Nautilus N671, N676, N678, N679, N680, N688; Acme VQ50, VQ80; American Coolair CF670A1151, CF684A1151; Carnes VCDD005C, VCDD008C; Fantech 6CEV005A, 6CEV008A; Greenheck SP-C50; Jenn Fan FF50, FF50E, FF80; Penn Z1, ZL1, ZL2; Twin City T050, T080; US Fan Intl UVQ50, UVQ80; and ABC Co. NCF80.