McMaster-Carr logo
    Filter by
    Duct Size
    Shape
    Material
    Duct Type
    Duct Profile
    Fitting Connection
    Gauge
    End Construction
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Vent 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)
    19 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.
    Vent Caps
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Vent Caps, Exhaust Vent.
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Vent Caps, Intake Vent.

    Exhaust Vent

    Intake Vent

    Cover vents with caps that let air in or out.
    Exhaust Vent—A built-in damper allows air to escape while blocking backdrafts, rain, and snow.
    Intake Vent—Only fresh air enters though the screen—no debris or pests allowed.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Duct
    Size
    ID
    OD
    Ga.
    Features
    Includes
    Each
    Exhaust Vent
    44"—30—Backdraft Damper1766K484000000
    55"—30—Backdraft Damper1766K48500000
    66"—30—Backdraft Damper1766K49200000
    77"—30—Backdraft Damper1766K48600000
    88"—30—Backdraft Damper1766K49300000
     
    Intake Vent
    4—3 7/8"30Bird Screen—1766K48100000
    5—4 7/8"30Bird Screen—1766K48200000
    6—5 7/8"30Bird Screen—1766K49700000
    7—6 7/8"30Bird Screen—1766K48300000
    8—7 7/8"30Bird Screen—1766K49800000
     
    Rain Caps
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Rain Caps.
    Top off vertical duct and exhaust stacks to prevent corrosion and blockages that can disrupt airflow.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Duct
    Size
    ID
    Ga.
    Each
    33"261766K71000000
    44"261766K7200000
    55"261766K7300000
    66"261766K7400000
    77"261766K7500000
    88"261766K7600000
    99"261766K7700000
    1010"261766K7800000
    1212"261766K7900000
     
    back to top