The Vevor crawl space flood vent is designed to allow the automatic entry and exit of floodwaters to help reduce hydrostatic pressure and protect foundation walls. Made from zinc-coated steel with a painted finish, it offers corrosion resistance and durability for long-term use. Its removable back plate and net surface make maintenance easier while also helping keep critters out. This surface-mounted wall vent is suitable for crawl spaces, garages, and full-height enclosures. Installation is straightforward with four mounting holes and included expansion bolts.