70 cfm at 6 Sones sound|Durable Broan designed blower wheel|Torsion spring grille mounting - no tools required|Compact housing fits easily between ceiling joists or wall studs|Double strength steel mounting flanges with keyhole slots for fast installation|Covered by U.S. and foreign patents|Single packs and project packs|Metal grille kit S97011308|White polymeric blends well with any decor|Plug-in, permanently lubricated motor|Broan-designed polymeric blower wheel|Snap-in/out motor assembly for easy cleaning no screws to drive or drop|Compact, 25 ga galvanized steel, attaches easily to wall or ceiling joists|Double strength mounting flanges with keyhole slots|Removable wiring cover make connections away from tight corners|No electrical knockout to remove|Polymeric duct fitting with tapered sleeve for easy, positive duct connection, ventilator shall have galvanized steel housing with double strength mounting flanges, shall be ducted vertically|Quiet polymeric damper prevents cold backdrafts no metallic clutter, motor assembly shall be removable and permanently lubricated