About Duct Connections
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Standard Duct and Fittings
No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.
Galvanized steel has good corrosion resistance. Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| Trade Size | Female ID | Male OD | Includes | End Construction | Gauge | Each | |
Galvanized Steel | |||||||
|---|---|---|---|---|---|---|---|
Exhaust Vent | |||||||
| 4 | 4" | __ | Damper | Plain | 30 | 00000000 | 000000 |
| 5 | 5" | __ | Damper | Plain | 30 | 00000000 | 00000 |
| 6 | 6" | __ | Damper | Plain | 30 | 00000000 | 00000 |
| 7 | 7" | __ | Damper | Plain | 30 | 00000000 | 00000 |
| 8 | 8" | __ | Damper | Plain | 30 | 00000000 | 00000 |
Intake Vent | |||||||
| 4 | __ | 3 7/8" | Screen | Crimped | 30 | 00000000 | 00000 |
| 5 | __ | 4 7/8" | Screen | Crimped | 30 | 00000000 | 00000 |
| 6 | __ | 5 7/8" | Screen | Crimped | 30 | 00000000 | 00000 |
| 7 | __ | 6 7/8" | Screen | Crimped | 30 | 00000000 | 00000 |
| 8 | __ | 7 7/8" | Screen | Crimped | 30 | 00000000 | 00000 |
Aluminum | |||||||
Exhaust Vent | |||||||
| 3 | 3" | __ | Damper | Plain | 24 | 0000000 | 0000 |
| 4 | 4" | __ | Damper | Plain | 24 | 0000000 | 0000 |
| 6 | 6" | __ | Damper | Plain | 24 | 0000000 | 00000 |
| 8 | 8" | __ | Damper | Plain | 24 | 0000000 | 00000 |
Dampers for Drop-Ceiling Diffusers
For use with drop-ceiling diffusers and ready-to-connect drop-ceiling diffusers, these dampers regulate airflow. The removable handle adjusts the damper to control airflow. Dampers mount to a collar.
Ready-to-Connect Drop-Ceiling 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.
Diffusers | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Ceiling Tile | Dampers | |||||||||||
| For Duct Trade Size | Wd., ft. | Lg., ft. | OD | Gender | Material | Color | Back Panel Material | Includes | Each | Each | ||
Louvered | ||||||||||||
| 6 | 2 | 2 | 5 7/8" | Male | Painted Steel | White | Steel | Collar | 00000000 | 000000 | 00000000 | 000000 |
| 8 | 2 | 2 | 7 7/8" | Male | Painted Steel | White | Steel | Collar | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 2 | 2 | 9 7/8" | Male | Painted Steel | White | Steel | Collar | 00000000 | 00000 | 00000000 | 00000 |
| 12 | 2 | 2 | 11 7/8" | Male | Painted Steel | White | Steel | Collar | 00000000 | 00000 | 00000000 | 00000 |
| 14 | 2 | 2 | 13 7/8" | Male | Painted Steel | White | Steel | Collar | 00000000 | 00000 | 000000 | 00 |
Snap-On Collars for Drop-Ceiling Diffusers
Connect drop-ceiling diffusers to duct. Use the included push-in fasteners to attach collar to diffuser.
Ready-to-Connect Moisture-Resistant
Drop-Ceiling 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.
Diffusers | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
For Ceiling Tile | Dampers | ||||||||||
| For Duct Trade Size | Wd., ft. | Lg., ft. | OD | Gender | Material | Color | Insulation Thermal Resistance | Each | Each | ||
Louvered | |||||||||||
| 6 | 2 | 2 | 5 7/8" | Male | Painted Steel | White | R-1 | 00000000 | 000000 | 00000000 | 000000 |
| 8 | 2 | 2 | 7 7/8" | Male | Painted Steel | White | R-1 | 00000000 | 00000 | 00000000 | 00000 |
| 10 | 2 | 2 | 9 7/8" | Male | Painted Steel | White | R-1 | 00000000 | 00000 | 00000000 | 00000 |
| 12 | 2 | 2 | 11 7/8" | Male | Painted Steel | White | R-1 | 00000000 | 00000 | 00000000 | 00000 |
Ready-to-Connect Ceiling Diffusers
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.
Air Diverters
Guide air toward your workspace or deflect unwanted drafts with these diverters. They fit over HVAC vents, diffusers, and registers to direct hot and cold air without restricting the flow.
Slide ceiling-mount diverters in between your diffuser and a drop ceiling grid to hold them in place.
Attach wall-mount diverters to steel registers with the included magnets, or mount them to plastic and wood vents with screws (not included). Adjust the width from 11” to 18” to fit a variety of vent sizes.
| Ht. | Wd. | Dp. | Material | Color | Mounting Fasteners Included | Mounting Slot Wd. | Each | |
| 5 1/2" | 11"-18" | 3" | Polycarbonate Plastic | Clear | No | 1/8" | 0000000 | 00000 |