About

Griff Invent, LLC is a small business in Greenville, NC established by an engineer, product developer, and do-it-yourselfer to continue manufacturing and distribution of the original Ultra CSV Replacement Crawl Space Vent. With the intent of making the product more widely available for purchase by homeowners, wholesale distributors, and professional installers, Griff Invent, LLC will use profits from Ultra CSV sales to expand the product line and support worthy causes. Ultra CSV is made in USA and proudly packaged by persons with disabilities.

Having started the business to acquire the formerly discontinued Ultra CSV vents for his own home, the owner considers Ultra CSV to be the best crawl space vent available for replacement, new construction, or crawl space encapsulation conversion projects. Utilizing a patented cross bar that clamps the outer frame securely within the foundation opening from behind, Ultra CSV will positively not come loose or fall out after proper installation. It installs in less than 10 minutes with simple tools and is easily adapted to non-typical foundation vent openings and structural interferences.

Originally invented by a crawl space maintenance expert and perfected after years of installation, Ultra CSV Crawl Space Vents provide over 30% better airflow when open (52.1 sq. in. NFA) than typical slider-style vents, energy-saving airtight closure of the crawl space when needed, and complete installation and service from outside the home. Dual-mode flexibility allows for improved airflow in warmer months and reduced heat loss during cold weather. Conversion from summer to winter (encapsulation) mode takes only 60 seconds with insertion of the solid seal plate included. For additional energy savings, insulation may be added in the space between cross bar and seal plate.

Ultra CSV fits all foundation vent openings from 7-1/8" to 9-1/2" tall and 14-5/8" to 17" wide. Stainless steel hardware is provided for installation into any foundation wall up to 8" thick. Tough, UV-resistant, ABS plastic construction with a heavy duty, stainless steel wire mesh screen stands up to constant attack from harsh weather and clawing pests. Ultra CSV Crawl Space Vents are the “Vents That Make Sense.”