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    35 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.
    Lightweight Aluminum—One-third the weight of steel, aluminum ductwork is easier to handle during installation. Like galvanized steel, it resists rust in wet environments but won’t last as long.
    Galvanized Steel
    Lightweight
    Aluminum
    Duct
    Size
    ID
    OD
    Ga.
    Features
    Includes
    Each
    Each
    Exhaust Vent
    66"—30—Backdraft Damper1766K492000000———0
    66"—22—Backdraft Damper———01773K63000000
     
    Intake Vent
    6—5 7/8"30Bird Screen—1766K49700000———0
     
    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.
    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
    66"261766K740000001767K34000000
     

    Ready-to-Connect Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Ready-to-Connect Ceiling Diffusers, Round Diffuser.
    Image of Product. Front orientation. Diffusers. Ready-to-Connect Ceiling Diffusers, Square Diffuser.

    Round Diffuser

    Square Diffuser

    Diffusers come with a collar and damper already in place for simple installation. They evenly disperse airflow into a room to maintain a consistent temperature throughout the space. Collar is adjustable to fit a range of duct sizes.
    Made of plastic, these diffusers are impact, abrasion, and chemical resistant.
    Overall
    For Duct
    Size
    Dia.
    Lg.
    Wd.
    Diffuser
    Shape
    Material
    Color
    Mounting Fasteners
    Included
    Each
    6, 7, 8—11 1/4"11 1/4"SquarePlasticWhiteYes2559K5000000
    6, 7, 812 1/8"——RoundPlasticWhiteYes2559K900000
     

    Drop-Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Drop-Ceiling Diffusers, Grid Diffusers.

    Grid Diffusers

    Image of Product. Front orientation. Diffusers. Drop-Ceiling Diffusers, Perforated Diffusers.

    Perforated Diffusers

    Place these diffusers in the grid of a drop ceiling to evenly disperse airflow and maintain consistent temperature throughout the space. Connect to round duct with a diffuser collar (not included).
    Grid Diffusers—Grid diffusers are often used with cooling systems. They disperse a thin layer of air along the ceiling for even distribution.
    Perforated Diffusers—Perforated diffusers have more openings than grid diffusers to release more air.
    Diffusers
    Replacement
    Diffuser Faces
    For Ceiling
    Tile, ft.
    For Duct
    Size
    Wd.
    Lg.
    Diffuser
    Shape
    Material
    Color
    Back Panel
    Material
    Insulation
    R Value
    Each
    Each
    Grid Diffusers
    6, 8, 10, 1222SquarePainted SteelWhiteFiberglass61837K450000001837K47000000
     
    Perforated Diffusers
    6, 8, 10, 1222SquarePainted SteelWhiteFiberglass61837K21000001837K2200000
     
    Accessories for Diffusers
    Diffuser Collars
    Image of Product. Front orientation. Diffuser Collars. Drop-Ceiling Diffusers.
    Connect drop-ceiling diffusers to duct. Use the included push-in fasteners to attach collar to diffuser.
    For Duct
    Size
    OD
    Gender
    Material
    Each
    65 15/16"MaleGalvanized Steel18525K44000000
    87 15/16"MaleGalvanized Steel18525K4500000
    109 15/16"MaleGalvanized Steel18525K4600000
    1211 15/16"MaleGalvanized Steel18525K4700000
    Diffuser Dampers
    For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these diffuser dampers regulate airflow. The removable handle adjusts the diffuser damper to control airflow. Diffuser dampers mount to a collar.
    Butterfly
    Opening/Closing Style
    For Duct
    Size
    Material
    Each
    6Galvanized Steel18525K81000000
    8Galvanized Steel18525K8200000
    10Galvanized Steel18525K8300000
    12Galvanized Steel18525K8400000

    Chemical-Resistant Duct and Fittings

    Image of System. Front orientation. Contains MultipleImages. Duct and Fittings. Chemical-Resistant Duct and Fittings.
    Chemicals can eat away at most metal duct, but not this PVC system. It’s often used to exhaust corrosive gases, vapors, and fumes. Components press-fit together and secure with PVC pipe cement.
    Rain Caps
    Image of Product. Front orientation. Duct and Fittings. Chemical-Resistant Duct and Fittings, Rain Caps.
    Prevent blockages that can disrupt airflow in vertical duct and exhaust stacks. These caps keep water and debris from entering your system.
    PVC
    Duct
    Size
    ID
    Color
    Each
    66 5/8"Gray2051K180000000
     

    Snap-On Drop-Ceiling Diffuser Collars

    Image of Product. Front orientation. Diffuser Collars.
    Connect drop-ceiling diffusers to duct. Use the included push-in fasteners to attach collar to diffuser.
    For Duct
    Size
    OD
    Gender
    Material
    Each
    65 15/16"MaleGalvanized Steel18525K44000000

    Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Ceiling Diffusers.
    Image of Product. Front orientation. Diffuser Collars. Ceiling Diffusers.
    Image of Product. Front orientation. Diffuser Collars. Ceiling Diffusers, Diffuser Collars with Airflow Damper.

    Diffuser Collars

    Diffuser Collars

    with Airflow Damper

    Evenly disperse airflow into a room to maintain a consistent temperature throughout the space.
    Diffuser Collars—Diffuser collars connect diffusers to duct. They are sold separately.
    Diffuser Collars with Airflow Damper—Diffuser collars with airflow damper connect diffusers to duct. They are sold separately and adjust to control airflow.
    Diffusers
    Diffuser Collars
    Diffuser Collars with
    Airflow Damper
    For Duct
    Size
    Overall
    Dia.
    Diffuser
    Shape
    Material
    Color
    Mounting Fasteners
    Included
    Each
    Each
    Each
    610"RoundPainted SteelWhiteYes1988K310000001988K410000001988K35000000
     

    Moisture-Resistant Drop-Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Moisture-Resistant Drop-Ceiling Diffusers, Grid Diffusers.

    Grid Diffusers

    Image of Product. Front orientation. Diffusers. Moisture-Resistant Drop-Ceiling Diffusers, Perforated Diffusers.

    Perforated Diffusers

    A vapor barrier provides moisture protection as these diffusers evenly disperse airflow and maintain a consistent temperature throughout the space. They fit in the grid of a drop ceiling. Connect to round duct with a diffuser collar (not included).
    Grid Diffusers—Grid diffusers are often used with cooling systems. They disperse a thin layer of air along the ceiling for even distribution.
    Perforated Diffusers—Perforated diffusers have more openings than grid diffusers to release more air.
    Diffusers
    Replacement
    Diffuser Faces
    For Ceiling
    Tile, ft.
    For Duct
    Size
    Wd.
    Lg.
    Diffuser
    Shape
    Material
    Color
    Back Panel
    Material
    Insulation
    R Value
    Each
    Each
    Grid Diffusers
    6, 8, 10, 1222SquarePainted SteelWhiteSteel61837K4600000001837K47000000
     
    Perforated Diffusers
    6, 8, 10, 1222SquarePainted SteelWhiteSteel61837K230000001837K2200000
     
    Accessories for Diffusers
    Diffuser Collars
    Image of Product. Front orientation. Diffuser Collars. For Drop Ceilings, Ceiling Mount.
    Connect drop-ceiling diffusers to duct. Use the included push-in fasteners to attach collar to diffuser.
    For Duct
    Size
    OD
    Gender
    Material
    Each
    65 15/16"MaleGalvanized Steel18525K44000000
    87 15/16"MaleGalvanized Steel18525K4500000
    109 15/16"MaleGalvanized Steel18525K4600000
    1211 15/16"MaleGalvanized Steel18525K4700000
    Diffuser Dampers
    For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these diffuser dampers regulate airflow. The removable handle adjusts the diffuser damper to control airflow. Diffuser dampers mount to a collar.
    Butterfly
    Opening/Closing Style
    For Duct
    Size
    Material
    Each
    6Galvanized Steel18525K81000000
    8Galvanized Steel18525K8200000
    10Galvanized Steel18525K8300000
    12Galvanized Steel18525K8400000

    Ready-to-Connect Drop-Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Ready-to-Connect Drop-Ceiling Diffusers, Louvered Diffusers.
    Image of Product. Front orientation. Diffusers. Ready-to-Connect Drop-Ceiling Diffusers, Perforated Diffusers.
    Image of Product. Front orientation. Diffusers. Ready-to-Connect Drop-Ceiling Diffusers, Plaque Diffusers.

    Louvered Diffusers

    Perforated Diffusers

    Plaque Diffusers

    No additional fittings or collars needed—connect to round duct with the included collar. These diffusers fit in the grid of a drop ceiling to evenly disperse airflow and maintain a consistent temperature throughout the space.
    For Ceiling
    Tile, ft.
    For Duct
    Size
    Wd.
    Lg.
    OD
    Gender
    Diffuser
    Shape
    Material
    Color
    Back Panel
    Material
    Louvered
    Diffuser Type
    Includes
    Each
    Louvered Diffusers
    6225 7/8"MaleSquarePainted SteelWhiteSteel3 TierCollar17905K111000000
    6226"MaleSquarePainted SteelWhiteSteel2 TierCollar17905K3800000
     
    Perforated Diffusers
    6226"MaleSquarePainted SteelWhiteSteel—Collar17905K12200000
     
    Plaque Diffusers
    6226"MaleSquarePainted SteelWhiteSteel1 TierCollar17905K11600000
     
    Accessories for Diffusers
    Diffuser Dampers
    For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these diffuser dampers regulate airflow. The removable handle adjusts the diffuser damper to control airflow. Diffuser dampers mount to a collar.
    Butterfly Opening/Closing Style—Dampers with a butterfly opening/closing style open on a middle hinge. The removable handle adjusts the damper to control airflow and is easier to adjust than dampers with a radial opening/closing style.
    Radial Opening/Closing Style—Dampers with a radial opening/closing style open in a circle for more precise airflow than dampers with a butterfly opening/closing style.
    Butterfly
    Opening/Closing Style
    Radial
    Opening/Closing Style
    For Duct
    Size
    Material
    Each
    Each
    6Galvanized Steel18525K8100000018525K111000000
    Touch-Up Paint Pens
    Prep, paint, and seal small scratches on metal surfaces with these pens.
    Dry
    Time
    Container
    Size, fl. oz.
    Solution
    Type
    Formulation
    Touch,
    sec.
    O'all,
    min.
    Max.
    Temp.
    For Use
    Outdoors
    For Use On
    Color
    (Appearance)
    Each
    0.3Solvent BasedAcrylic Plastic
    		301Not RatedNoAluminum, Steel, IronWhite (Gloss)9959T111000000

    Ready-to-Connect Moisture-Resistant Drop-Ceiling Diffusers

    Image of Product. Front orientation. Diffusers. Ready-to-Connect Moisture-Resistant Drop-Ceiling Diffusers, Louvered Diffusers.

    Louvered Diffusers

    A vapor barrier provides moisture protection as these diffusers evenly disperse airflow and maintain a consistent temperature throughout the space. No additional fittings or collars needed—connect to round duct with the included collar. Diffusers fit in the grid of a drop ceiling.
    6 Insulation R Value—Diffusers with 6 insulation R value maintain temperature more effectively than diffusers with 1 insulation R value.
    Diffusers
    Diffuser
    Insulation Blankets
    For Ceiling
    Tile, ft.
    For Duct
    Size
    Wd.
    Lg.
    OD
    Gender
    Diffuser
    Shape
    Material
    Color
    Insulation
    R Value
    Each
    Each
    Louvered Diffusers
    6226"MaleSquarePainted SteelWhite117905K5400000017905K127000000
    6226"MaleSquarePainted SteelWhite617905K13100000017905K12800000
     
    Accessories for Diffusers
    Diffuser Dampers
    For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these diffuser dampers regulate airflow. The removable handle adjusts the diffuser damper to control airflow. Diffuser dampers mount to a collar.
    Butterfly Opening/Closing Style—Dampers with a butterfly opening/closing style open on a middle hinge. The removable handle adjusts the damper to control airflow and is easier to adjust than dampers with a radial opening/closing style.
    Radial Opening/Closing Style—Dampers with a radial opening/closing style open in a circle for more precise airflow than dampers with a butterfly opening/closing style.
    Butterfly
    Opening/Closing Style
    Radial
    Opening/Closing Style
    For Duct
    Size
    Material
    Each
    Each
    6Galvanized Steel18525K8100000018525K111000000
    Touch-Up Paint Pens
    Prep, paint, and seal small scratches on metal surfaces with these pens.
    Dry
    Time
    Container
    Size, fl. oz.
    Solution
    Type
    Formulation
    Touch,
    sec.
    O'all,
    min.
    Max.
    Temp.
    For Use
    Outdoors
    For Use On
    Color
    (Appearance)
    Each
    0.3Solvent BasedAcrylic Plastic
    		301Not RatedNoAluminum, Steel, IronWhite (Gloss)9959T111000000
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