Air Vent 81237 Aluminum Reversible Louver, 18" x 24", White SummerFun Product has a 12 month

Product has a 12 month shelf life when stores in a cool dry place

4-ply design for lasting durability

Angled aluminum slip-resistant rubber feet

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

Multiple units required for multiple rooms

Air Vent 81237 Aluminum Reversible Louver, 18" x 24", White SummerFun Product has a 12 monthWall 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