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VentBlock (Case of 30)

  • VentBlock Product Picture
  • VentBlock Installation
  • VentBlock Side Profile
  • VentBlock Installed and Sealed
  • VentBlock Angled Profile
7.00 LBS
Calculated at checkout

Product Description

This polyethylene panel provides a fast, clean and effective way to seal foundation vents when providing moisture control in a crawl space. 

  • Designed to fit the traditional 8” x 16” foundation vent opening.
  • Actual Size: 8.25" x 16.25" x 1"
  • Can easily be trimmed if a smaller size is needed.

From within the crawl space, install by press fitting the VentBlock to the back side of the existing foundation vent.  If the vent opening is too small, you can easily trim the VentBlock.  Once you have a good fit, you have the option to seal around the edges.  This not only creates a better seal, but provides a better hold to avoid wind from blowing it out of place.  For this, we recommend Pur Stick Foam, Lexel Caulk or White Lightning 3006 Caulk.

This product is a case quantity that contains 30 VentBlocks.  If you wish to purchase in smaller quantities, Click Here to go to our product page where you can buy individual units.


Download Specification Sheet (PDF)




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