Day/Night Solar Powered Opening; 3 Inch Size Vent; 9 Inch Diameter; With Insect Screen; ABS Body; Stainless Steel Exterior; With Built-In On/ Off Fan Switch, LED Lights, Intake/ Exhaust Switch, Pre-Installed Rechargeable Battery, (2) Trim Rings, Exterior Trim Ring Gasket, Solar Vent Base Gasket, Mounting Hardware; CE Certified; Replaces NICRO 3 Inch And 4 Inch Snap-In Deck Plates; Fits Existing Holes Once Snap-In Deck Plates Are Removed