Wall or gable louvers are a type of attic exhaust vent that make up half of a balanced attic ventilation system for each roof. Intake vents make up the other half of the system. Together they help remove any built-up heat and moisture inside the attic for year-round ventilation. Installs in the gable end of the house 92.4 Square inches of Net Free Area airflow each Aluminum construction Has a flush flange and has no screens Rectangular design Part of a balanced attic ventilation system for year-round airflow Helps to fight heat and moisture buildup inside an attic as well as ice dams in cold climates Requires intake ventilation for proper performance Use the Lowe's online calculator to determine if your attic ventilation is balanced Color/Finish Family: White Manufacturer Color/Finish: White Height (Inches): 26.5 Rough Opening Length (Inches): 24 Rough Opening Width (Inches): 14 Size (W x H): 14-in x 24-in Weight (lbs.): 1.3 Width (Inches): 15.75 Material: Aluminum Package Quantity: 1 Paintable: Yes Screen Included: No Shape: Rectangle Warranty: None CA Residents: Prop 65 Warning(s): Yes UNSPSC: 40101500