The YCS Flex Foam Vent Cover is designed to make sealing crawlspace vents quick and easy. No more cutting rigid foam board on the job, leaving a mess in the customer’s yard. Our YCS Flex Foam Vent covers friction fit into most standard 8″ x 16″ openings and can be easily trimmed. Once the cover is in place, simply apply a small bead of the YCS Magic Adhesive around the edges to seal.
Everything You Need for Confident, Code-Compliant Installation



Every YCS product is supported by detailed documentation, training materials, and technical guidance to help contractors install with precision and confidence. Whether you’re reviewing specifications, accessing safety documentation, or preparing your team for installation, our resources ensure consistent, high-performance results on every project.