McMaster-Carr logo
    Filter by
    Gauge
    End Construction
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Comments
    E-mail address (if you would like a response)
    37 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.
    Straight Collars
    Link rectangular duct systems to equipment that uses round duct. Cut a hole, install the collar, and connect a piece of round duct.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Polyethylene Foam Gasket—The flange has an adhesive-backed gasket to bond the connection until you fasten with screws. The gasket also prevents leaks.
    Galvanized Steel
    Galvanized Steel with
    Polyethylene Foam Gasket
    Duct
    Size
    ID
    OD
    Ga.
    Each
    Ga.
    Each
    Male
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Straight Collars, Male.
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Straight Collars, Male, Polyethylene Foam Gasket.

    Polyethylene

    Foam Gasket

    32 7/8"282015K5600000———0
    43 7/8"282015K520000———0
    54 7/8"282015K570000246766K41000000
    65 7/8"282015K460000246766K4200000
    76 7/8"———0246766K4300000
    87 7/8"282015K540000246766K4400000
    109 7/8"282015K580000246766K4500000
    1211 7/8"282015K5900000246766K4600000
    1413 7/8"282015K6100000246766K4700000
    1615 7/8"282015K6200000246766K4800000
    1817 7/8"282015K6300000246766K4900000
    2019 7/8"282015K6400000———0
     
    Female
    Image of Product. Front orientation. Duct and Fittings. Standard Duct and Fittings, Straight Collars, Female.
    33"282015K360000———0
    44"282015K320000———0
    55"282015K370000———0
    66"282015K450000———0
    88"282015K340000———0
    1010"282015K380000———0
    1212"282015K3900000———0
    1414"282015K4100000———0
    1616"282015K4200000———0
    1818"282015K4300000———0
    2020"282015K5100000———0
     

    Rectangular Duct and Fittings

    Image of System. Front orientation. Exploded view. Duct and Fittings. Rectangular Duct and Fittings.
    Maximize the space in close quarters, such as inside walls and ceilings. As rectangular duct sizes increase, they get wider but not taller. This shape is most often used for heating and cooling inside buildings. Components connect with brackets.
    Straight Collars
    Image of Product. Front orientation. Duct and Fittings. Rectangular Duct and Fittings, Straight Collars.
    Add a branch to an existing line of rectangular duct. Cut a hole in the duct, attach the collar by bending the tabs, and connect another piece of duct.
    Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
    Galvanized Steel
    Wd.
    Ht.
    Ga.
    Each
    8"8"281964K61000000
    10"8"281964K6200000
    12"8"281964K6300000
    14"8"281964K6400000
    16"8"261964K6500000
    24"8"261964K6700000
     
    back to top