Aluminum Wall Vent with Screen Only (4 Inch) (SWVA 4)

Aluminum Wall Vent With Screen. Used for air intake or exhaust. Has 8.5 inch collar pipe extension (throat) and 1/4 inch bug screen and low profile hood for wind and weather protection installed.–Used to bring outside air in for combustion air or indoor air quality & natural ventilation –8.5 inch collar pipe extension and 1/4 inch bug screen. (1/8 inch screen available) –Durable Heavy Grade Aluminum, Available in 3″-16?? Download The Spec Sheet