Thermaduct was designed as a product to benefit not just the building owner, but also those who install our outdoor duct system. While we have a detailed Installation Manual available from our Thermaduct Representatives, you can rest easy knowing you’ll find a 4-bolt connection system typical of traditional ductwork. What’s uncommon about Thermaduct is the steps we take to ensure customers receive an air tight system that also eliminates as many areas for water intrusion as possible.