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.
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Product Reviews
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Vent Block
Exactly what I was looking for. These fit like a glove in the standard crawlspace vent opening. Nice and tight. The price was also fantastic. Definately recommend this product. Received my order in 4 days.
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Crawlspace ventblocks
Exactly what we needed and perfect fit. Excellent shipping and delivery time. Thank you
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vent block
It worked well, and conformed well to the crawl space cinder block vent openings, some of the times as I cut I was able to get as many as 3 squares cut per piece ! (Most yielded 2 pieces) sealed very well, came quickly, and it looks VERY professional and provides a TIGHT seal when you leave about 1/4-1/2" per side and compress and form fit it to the inside of the block.
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Crawl space vent block
Perfect, finishing touch on my crawl space, easy to work with and get a custom fit
