Air Vent 81237 Aluminum Reversible Louver, 18" x 24", White SummerFun Contains a mildewcide to prevent

Contains a mildewcide to prevent growth of mold and mildew on the paint film only

Use (GBK14P) ground bar if required

Time Heat-Up: 6 s

Ice dams cause water to back up under shingles

Air Vent 81237 Aluminum Reversible Louver, 18" x 24", White SummerFun Contains a mildewcide to preventWall louvers are installed in the gable end of the attic. The higher they are placed, the more effective they become as exhaust vents. Wall louvers are not preferred for ventilating an attic, because they provide limited airflow under the roof deck, resulting in "hot spots". Can be used where ridge vents are impractical, or where the homeowner doesn't want roof vents. White Reversible 118. 8 sqin net free area Riveted construction Improves air flow