Provides additional air ventilation. Increases circulation when paired with the side louver window. Helps regulate temperatures. Manual adjustment for variable airflow. Can be fitted with the rion automatic roof vent opener for optimal airflow. White color. Assembly required. Warranty: 1 Year Limited. 51.3 in. L x 2.1 in. W x 5 in. H (7.7 lbs.). Increase the air circulation in your rion sun room 2 with an additional air vent. Additional air vents will reduce humidity and improve air circulation to keep your sun room cooler on warm days.