Thermaduct duct systems are designed to benefit not just the building owner, but also those who install these systems both indoors and out. 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 rectangular ductwork or an easy to use coupling system for round or flat oval applications. What’s uncommon about Thermaduct products is the steps we take to ensure customers receive an air tight system that also eliminates as many areas for water intrusion as possible.