Tjernlund 18” x 10” Crawl Space Steel Vent Cover “Morning Star” Pattern for High Airflow and Extreme Durability;
Tjernlund 18” x 10” Crawl Space Steel Vent Cover “Morning Star” Pattern for High Airflow and Extreme Durability

The UnderAire crawl space vents can be used to provide foundations with passive ventilation or can be used along with a fan-powered crawl space ventilator for maximum effectiveness.TM crawl space vents can be used to provide...

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The UnderAire crawl space vents can be used to provide foundations with passive ventilation or can be used along with a fan-powered crawl space ventilator for maximum effectiveness.TM crawl space vents can be used to provide foundations with passive ventilation or can be used along with a fan-powered crawl space ventilator for maximum effectiveness.

  • Prevents and Reduces Moisture
  • Increases Air Circulation From Airflow of Almost 80%
  • New two piece design meant to measure 18 x 10" In total
  • Prevents and Reduces Moisture
  • Increases Air Circulation From Airflow of Almost 80%
  • New two piece design meant to measure 18 x 10" In total

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