Duct Work America's Premiere Clamp-Together Duct System The new standard for industrial round duct applications from Nordfab Systems, Inc. Simple to install - faster installations Clamp together components can be taken apart and reused Easy to connect to existing duct work Components and adapters fit every system Adjustable Q-F fitting simplifies duct connections Smooth interior surfaces - helps prevent clogs Download the Catalog Part 1 (541K) Download the Catalog Part 2 (683K) Give us a call at (713) 466-7555 or Contact Us.