8 X 8 White Aluminum Wall-Louver

Wall louvers are installed in the gable end of the attic and provide exhaust ventilation. Flush flange. No screens. Aluminum construction.No. RL808000: 8" x 8", mill, 17.6 sq. in. of net free areaNo. RL808900: 8" x 8", white, 17.6 sq. in. of net free areaNo. RL812000: 8" x 12", mill, 26.4 sq. in. of net free areaNo. 81104: 12" x 12", mill, 39.6 sq. in. of net free areaNo. 81202: 12" x 12", white, 39.6 sq. in. of net free areaNo. 81112: 12" x 18", mill, 59.4 sq. in. of net free areaNo. 81214: 12" x 18", white, 59.4 sq. in. of net free areaNo. 81134: 14" x 24", mill, 92.4 sq. in. of net free areaNo. 81232: 14" x 24", white, 92.4 sq. in. of net free areaNo. 81139: 18" x 24", mill, 118.8 sq. in. of net free areaNo. 81237: 18" x 24", white, 118.8 sq. in. of net free area