Roof 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. Use the Lowe's calculator to determine how many individual roof louvers are needed per roof.
- Heavy-duty rust-free integral screen 
- 50 Square inches of Net Free Area airflow each 
- Aluminum construction 
- Square-top design 
- Suitable for 3/12 to 8/12 roof pitch 
- 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 how many are needed for each attic