McMaster-Carr logo
    Filter by
    Gauge
    Duct Profile
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    End Construction
    Opening/Closing Method
    Overall Length
    Blade Finished Material
    Blade Material
    Airflow Damper Type
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    10 Products

    Standard Duct and Fittings

    Image of System. Front orientation. Exploded view. Duct and Fittings. Standard Duct and Fittings.
    Deliver air for a range of HVAC applications, including exhaust and dust collection. Our basic duct, the round shape creates smoother, more efficient airflow than rectangular and oval duct. The male end is slightly smaller than the female, so sections join without clamps or tools.
    End Caps
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, End Caps, Male.

    Male

    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, End Caps, Female.

    Female

    Cover unused duct openings to prevent air from leaking, dust from escaping, and debris from entering. End caps are often used to seal duct after changes to your system or equipment. To make modifications or expand your line, remove the cap.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Duct
    Size
    ID
    OD
    Ga.
    Each
    Male
    20—19 7/8"2417135K43000000
     
    Female
    2020"—2417135K3300000
     

    Quick-Disconnect Duct and Fittings

    Image of System. Front orientation. Exploded view. Duct and Fittings. Quick-Disconnect Duct and Fittings.
    The fastest ductwork to disassemble for dust collection and other frequently cleaned systems. Join sections with quick-release clamps that open and close with a flip of the latch. Since you don’t need screws, welds, or tools, the installation time is half that of other duct types.
    Duct with Access Panel
    Image of Product. Front orientation. Duct and Fittings. Quick-Disconnect Duct and Fittings, Duct with Access Panel.
    No need to cut a hole and install a door—just slide the built-in panel to get inside this duct for cleaning and inspection.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Opening
    Galvanized Steel
    Duct
    Size
    ID
    Lg.
    Wd.
    Lg.
    Ga.
    Each
    2019 15/16"58 3/4"7"14"201761K2890000000
     
    End Caps
    Image of Product. Front orientation. Duct and Fittings. Quick-Disconnect Duct and Fittings, End Caps.
    Cover unused duct openings to prevent air from leaking, dust from escaping, and debris from entering. End caps are often used to seal duct after changes to your system or equipment. To make modifications or expand your line, remove the cap.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Corrosion-Resistant 304 Stainless Steel—The most corrosion-resistant metal duct we sell. It won’t rust or degrade in systems that exhaust chemical fumes or vent heat from industrial ovens and dryers.
    Galvanized Steel
    Corrosion-Resistant
    304 Stainless Steel
    Duct
    Size
    ID
    Ga.
    Each
    Each
    2019 7/8"201761K659000000———0
    2019 15/16"20———02538K535000000
     

    Airflow Dampers

    Image of Product. Front orientation. Duct Airflow Dampers. Airflow Dampers, Standard Airflow Damper, Male.

    Standard

    Airflow

    Damper, Male

    The simplest, most reliable way to regulate airflow in standard duct. Turn the lever to adjust the blade.
    Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Duct
    Size
    OD
    Overall
    Lg.
    Ga.
    Each
    Standard Airflow Damper
     
    Male
    2019 3/4"4 1/2"1817355K750000000
     

    Airflow Dampers for Quick-Disconnect Duct

    Image of Product. Front orientation. Duct Airflow Dampers. Airflow Dampers for Quick-Disconnect Duct.
    Regulate airflow to sections of quick-disconnect duct. Often used in dust collection systems, these dampers attach with quick-release clamps. Turn the lever to adjust airflow.
    Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Duct
    Size
    ID
    Overall
    Lg.
    Ga.
    Each
    2020 1/8"23"201761K3970000000
    Duct Clamps
    Image of Product. Front orientation. Duct and Fittings.
    Match clamps to your duct material.
    Galvanized Steel
    Duct
    Size
    Each
    201761K102000000

    Spiral Duct and Fittings

    Image of System. Front orientation. Contains MultipleImages. Duct and Fittings. Spiral Duct and Fittings.
    Reinforced with a continuous seam, this duct keeps its shape, even against suction from dust collection systems. On the inside, duct is smooth for efficient airflow. Because of its attractive look, spiral duct is often used for exposed heating and cooling systems.
    End Caps
    Image of Product. Front orientation. Duct and Fittings. Spiral Duct and Fittings, End Caps.
    Cover unused duct openings to prevent air from leaking, dust from escaping, and debris from entering. End caps are often used to seal duct after changes to your system or equipment. To make modifications or expand your line, remove the cap.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Corrosion-Resistant 304 Stainless Steel—The most corrosion-resistant metal duct we sell. It won’t rust or degrade in systems that exhaust chemical fumes or vent heat from industrial ovens and dryers.
    Galvanized Steel
    Corrosion-Resistant
    304 Stainless Steel
    Duct
    Size
    OD
    Ga.
    Each
    Each
    2019 7/8"245078K3620000002561K2060000000
    back to top