4" Finish Pack, CFM: 110, Sones: 1.3, Energy Star Qualified, Series: InVent. For Use With NuTone AN110HF Fan Housing Packs To Complete The Installation. Includes: Fan Motor and White Grille. Housing L x W x D: 9-1/4" x 10" x 5-3/4". Grille Size: 11-1/4"L X 12"W.