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Rectangular Duct and Fittings
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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.
Duct
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Pair with compatible fittings and accessories.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
Galvanized Steel | ||||||||
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Wd. | Ht. | Lg., ft. | Ga. | Includes | Each | |||
| 8" | 8" | 4 | 28 | Two Drive Brackets, Two S-Brackets | 0000000 | 000000 | ||
| 10" | 8" | 4 | 28 | Two Drive Brackets, Two S-Brackets | 0000000 | 00000 | ||
| 12" | 8" | 4 | 28 | Two Drive Brackets, Two S-Brackets | 0000000 | 00000 | ||
| 14" | 8" | 4 | 28 | Two Drive Brackets, Two S-Brackets | 0000000 | 00000 | ||
| 16" | 8" | 4 | 26 | Two Drive Brackets, Two S-Brackets | 0000000 | 00000 | ||
| 20" | 8" | 4 | 26 | Two Drive Brackets, Two S-Brackets | 0000000 | 000000 | ||
| 24" | 8" | 4 | 26 | Two Drive Brackets, Two S-Brackets | 0000000 | 000000 | ||
Brackets
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S-Bracket |
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Drive Bracket |
Securely connect rectangular duct and fittings. Brackets can be cut to length. Also known as cleats.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
S-Bracket—Connect the long sides of duct.
Drive Bracket— Connect the short sides of duct.
90° Elbow Connectors
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Horizontal Elbow |
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Vertical Elbow |
Change the direction of airflow when joining lengths of duct.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
Galvanized Steel | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Wd. | Ht. | Ga. | Each | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Horizontal Elbow | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 8" | 8" | 28 | 0000000 | 000000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 10" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 12" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 14" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 16" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 20" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 24" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vertical Elbow | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 8" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 10" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 12" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 14" | 8" | 28 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 16" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 20" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 24" | 8" | 26 | 0000000 | 00000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
45° Elbow Connectors
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Horizontal Elbow |
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Vertical Elbow |
Change the direction of airflow when joining lengths of duct.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
Straight Reducers
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Shown Installed |
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Transition between ducts of different sizes. These reducers decrease duct width by 2". Cut a hole in the smaller duct to fit the reducer and secure it with tapping screws.
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
Galvanized Steel | ||||||
|---|---|---|---|---|---|---|
Wd. | Ht. | Ga. | Each | |||
| 2" | 8" | 28 | 0000000 | 000000 | ||
Straight Collars
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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.
End Caps
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Cover unused duct openings to prevent air leaks. 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.
Duct Turning Vanes
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Shown Cut and Assembled |
Turning Vanes—Guide air smoothly around sharp bends. These turning vanes improve airflow efficiency by reducing turbulence and pressure loss. Cut vanes to size and pair with rails. Mount assembled vanes inside duct using tapping screws.
Turning Vane Rails—Mounting tabs hold vanes in place. Cut rails to length.
Turning Vanes for Rectangular Duct
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Shown Cut and Assembled |
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Turning Vanes |
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Turning Vane Rails |
Guide air smoothly around sharp bends in rectangular duct. Turning vanes improve airflow efficiency by reducing turbulence and pressure loss. To assemble, cut vanes and rails to size. Rails have mounting tabs to hold vanes. Mount inside duct using tapping screws (not included).
Galvanized Steel—Corrosion resistant and affordable, galvanized steel is the most commonly used ductwork material.
Duct Fire Dampers
In case of a fire, these dampers shut automatically to stop airflow. They have a fusible link that melts at 165° F, releasing a spring to close the blade. Dampers meet UL 555 fire safety standards to help prevent the spread of fire for 11/2 hours. They are undersized to fit inside duct.
For Square Duct
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Galvanized Steel—Strong and corrosion resistant, galvanized steel is the most commonly used ductwork material.
For Duct | Overall | Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Ht. | Wd. | Ht. | Wd. | Dp. | Fire Safety Std. | Fusible Link Melting Temp., ° F | Ga. | Each | ||
| 8" | 8" | 7 3/4" | 7 3/4" | 4 7/8" | UL 555 | 165 | 22 | 0000000 | 000000 | |
| 12" | 12" | 11 3/4" | 11 3/4" | 4 7/8" | UL 555 | 165 | 22 | 0000000 | 00000 | |
| 14" | 14" | 13 3/4" | 13 3/4" | 4 7/8" | UL 555 | 165 | 22 | 0000000 | 00000 | |
| 18" | 18" | 17 3/4" | 17 3/4" | 4 7/8" | UL 555 | 165 | 22 | 0000000 | 000000 | |
| 24" | 24" | 23 3/4" | 23 3/4" | 4 7/8" | UL 555 | 165 | 22 | 0000000 | 000000 | |
