Amazon · Oct 30, 2026
$7 $12
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Handy for sealing wide gaps before caulking windows, doors, or expansion joints, and it keeps you from wasting caulk filling deep voids—right now it's $4.96 off the list price. Buy Now at Amazon
Features
- Weather-resistant construction for indoor and outdoor use
- Provides sturdy base for professional caulking applications
- Easily trim and fit to seal any gap size
- Effortless installation without messy adhesives
- Insulates and damp-proofs to improve home airtightness