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Steel Duct & Fittings

Steel Duct & Fittings

Route hot or cold air throughout your home or facility with steel duct and fittings. Steel duct is typically a better choice than PVC for high temperature applications, and is generally lighter in weight.


Create a straight run of duct with this pipe. It's typically used to branch off trunk lines as well as to deliver return air.

Pipe Nipples

Get just the length of pipe you need to span the distance between two sections of ductwork with these adjustable pipe nipples. Also known as adjustable sleeves, they telescope to the desired length and include an O-ring to form a tight seal on the joint. Use a duct clamp on each end to secure the nipple onto the ductwork. These nipples can be easily readjusted, removed, and reused to accommodate changes in your duct system.

Duct Clamps

Secure joints between duct and fittings with these duct clamps. They wrap around ductwork for a firm hold.

Angle Flanges

Attach duct ends to HVAC equipment or connect two lengths of duct with these angle flanges, also known as angle rings. They create a strong joint to add stability to your ductwork and allow easy access to bolt holes for quick assembly and disassembly.

Angle Flange Adapters

Save yourself a step when connecting to flanged pipe and fittings. These fittings consist of an angle flange at one end for making a flange-to-flange connection and a length of duct at the other end for making a slip-fit connection to a run of duct.


Transition between larger and smaller ductwork with these reducers. They have a different diameter at each end.

End Caps

Cover duct ends with these caps to terminate a run of duct, protect duct ends, and provide a finished look on your ductwork.

Manual Blast Gates

Generate increased flow and suction in your duct system by using these manual blast gates to temporarily close off specific branches when they're not needed. Also known as cut-offs or slide gates, they have a blade that slides into the airstream to reduce or shut down flow. They're typically used at vent points to give you control over air distribution for improved energy efficiency in your HVAC system.

Backdraft Dampers

Block backdrafts with these inline backdraft dampers. They have spring-loaded blades that stay open to allow airflow in only one direction and close if there is backflow to help seal out backdrafts.

90° Elbows

Change the direction of airflow at a right angle with these 90° elbows to move air up, down, or around corners. Also known as bends, these long radius elbows have a more gradual angling than sharp right-angle elbows to cause less reduction in airflow.

45° Elbows

Redirect ducting while minimizing airflow restriction by using these 45° elbows, which are angled more gently than 90° elbows.


Split airflow off a trunk or branch line and redirect it at a right angle with these tees. They're often used for exhaust applications.

Pipe Hangers

Attach these hangers to ceilings to hold runs of pipe and ductwork securely in place.