Pay in 4 interest-free payments of $21.25 Learn more
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
bonded tar and granulated shingles
round material
hidden interlocking
04 Manufacturer Warranty 1-Year Warranty Certifications and Listings No Certifications or Listings
Pebbles size range on the shortest side: 5 cm to 10 cm
110 CFM Power Crawl Space Fan Crushed Stone bonded tar and granulated shinglesThe Tjernlund UnderAire Series V1 Crawl Space Ventilator is designed to circulate fresh outdoor air underneath homes and porches. Excessive humidity levels in Crawl Spaces is the leading cause of premature rotting of support columns, joists, floors and beam supports. Humidity can promote fungus growth and increased termite activity. Humidity may also cause plumbing failures due to rust and corrosion. Constant operation helps vent radon gases, treated
US$ 183.95
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