Joining · Long sides
S cleats
24-gauge galvanized, 60 in by 1 in, in bundles of ten. Connects the long sides of rectangular or stack duct.
View S cleatsRectangular Duct | HVAC Trunk Line (5 ft Section) | Galvanized, Aluminum, or Stainless Steel
Specifications
Rectangular duct, 5 ft section
Fabricated to order at our Chandler, Arizona shop. Width, height, and gauge are selected above. Confirm the values below match your variant options.
| Specification | Detail |
|---|---|
| Section length | 60 in (5 ft) |
| Material | Galvanized steel |
| Standard gauge | 26 ga for residential and light commercial |
| Heavier gauges | 24 ga and 22 ga per SMACNA for commercial trunk lines |
| Standard | SMACNA compliant |
| Also available in | Aluminum and stainless steel |
| Application | Trunk lines, plenums, branch runs |
| Order size | No minimum |
Why rectangular
It fits where round cannot
Rectangular duct is the backbone of most forced-air systems in residential and commercial buildings.
Unlike round duct, it fits into tight ceiling cavities, between floor joists, and along wall chases. That makes it the standard choice anywhere headroom or structure limits what a circular section can do. The smooth interior keeps airflow consistent and helps the system run efficiently.
Completes the run
What you will need with it
Duct sections join with cleats. Add them to the same order and everything ships or gets picked up together.
Joining · Top and bottom
Drive cleats
Galvanized, 60 in by 1 in, in bundles of ten. Secures the top and bottom edges for a leak-free joint.
View drive cleatsTransitions · Fittings
Elbows and takeoffs
Elbows, reducers, wyes, and start collars sized to the duct you are ordering.
Browse fittingsCustom sizes
Not the size you need?
Custom sizing is our core capability, not an exception we make.
Built to your numbers
If you need a width, height, or length that is not in the catalog, submit your dimensions and we fabricate it.
Sketches or shop prints
We work from measurements, field sketches, or formal shop drawings. Whatever you already have is enough to start.
Quoted in one business day
Send the scope and we come back with a price and a confirmed lead time.
Galv, aluminum, stainless
Pick the material that suits the environment, the airflow, and the spec.
Questions
About this product
What is the difference between a trunk line and a plenum?
A trunk line is the main horizontal duct that carries conditioned air from the air handler to branch takeoffs through the building. A plenum is the transition box that connects the air handler outlet collar to the trunk line. The plenum is usually taller and wider to match the unit outlet, then transitions down to the trunk dimension. We fabricate both.
What gauge is standard?
26-gauge galvanized covers most residential and light commercial sizes. Larger commercial trunk lines and industrial applications are built in 24 or 22 gauge per SMACNA requirements.
Can I get this in a size that is not listed?
Yes. Custom sizes are our core capability. Submit your width, height, and length through the custom quote form and we fabricate virtually any rectangular configuration.
How do the sections connect?
S cleats join the long sides and drive cleats secure the top and bottom edges. Both are sold in bundles of ten and can go on this same order.
Can I pick this up instead of shipping it?
Yes. Local pickup is available at our Chandler shop at 3385 N Nevada St. Select it at checkout. Everything else ships palletized LTL nationwide.