VentBlock

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.

We also offer this product in case quantities which contain 30 VentBlocks.  Click Here to view that product page.

Download Specification Sheet (PDF)