Custom-fabricated rectangular ductwork for residential, commercial, and industrial HVAC systems. Built to your exact dimensions in galvanized steel, aluminum, or stainless steel — configure standard sizes in our 3D tool or request a custom quote.

Rectangular ductwork forms the backbone of most forced-air HVAC systems in residential and commercial buildings. Unlike round duct, rectangular duct fits into tight ceiling cavities, between floor joists, and along wall chases — making it the standard choice wherever headroom or structural constraints limit the use of circular sections. Duct2Go fabricates rectangular duct in single-piece and multi-piece configurations including straight trunk sections, plenum boxes, offset transitions, takeoffs, and end caps.

Every piece is built from 26-gauge to 20-gauge galvanized steel as standard. Aluminum and stainless steel are available for specialty applications including healthcare facilities, industrial environments, and data center cooling infrastructure. All rectangular ductwork is dimensioned and constructed to SMACNA standards ensuring code compliance and compatibility with standard fittings from any manufacturer.

Rectangular metal ductwork is the preferred solution for HVAC installations where space efficiency, airflow control, and system flexibility are critical. Its low-profile design allows contractors to route duct runs through ceilings, mechanical rooms, wall cavities, and other confined spaces where round duct may not fit. Rectangular duct systems are commonly used in homes, office buildings, warehouses, schools, healthcare facilities, and industrial applications due to their ability to handle high airflow volumes while maximizing available space.

Duct2Go manufactures custom rectangular sheet metal ductwork to meet the requirements of new construction, retrofit projects, and replacement installations. Our product range includes straight duct sections, HVAC plenum boxes, square-to-round transitions, takeoffs, elbows, and end caps, all fabricated to precise dimensions for seamless integration into your HVAC system. With galvanized steel, aluminum, and stainless steel options available, you can select the material best suited to your environment, airflow requirements, and project specifications.