ACT garage exhaust hoses are used for vehicles that have larger stacks or tailpipes; like diesel trucks, buses, fire engines, and semis. Exhaust-Away offers 4″ and 5″ inside diameter hoses in 11’ or 20’ lengths, and a 6” inside diameter hose in 11’ lengths. The 4″ size is great for both out-the-door and overhead applications, while the 5″ and 6″ sizes are intended for overhead use only. That’s because if you have an application that requires that large of a hose you need to have a fan assisted system. ACT garage exhaust hoses are designed to be durable, heat resistant, and flexible. We also offer various hose accessories like splice connectors, elbows, y’s, and tailpipe/stack adapters that allow the hoses to fit almost any vehicle’s tailpipe or stack.