Airvian Linear Slot Diffuser
18x12 Linear Slot Diffuser – 6 Slots
Designed for a 18 × 12 in duct opening, this 6-slot aluminum linear slot diffuser is rated at 454 CFM at 550 FPM. Listed for ceiling, wall and floor applications.
- Neck size
- 17 7/8 in × 11 7/8 in
- Visible face
- 20 1/8 in × 13 9/16 in
- Airflow
- 454 CFM
- Slots
- 6 slots
- Material
- Aluminum
- Applications
- Ceiling, Wall, Floor
Airflow control: Adjustable internal airflow wings
Product Details
Designed for a 18 × 12 in duct opening.
The diffuser uses 6 1 in-wide slots. Built from aluminum.
Rated airflow is 454 CFM at an effective velocity of 550 FPM.
Applications: Ceiling, Wall, Floor.
Airflow control: Adjustable internal airflow wings.
Full Specifications
| Slots | 6 |
|---|---|
| Length | 18 in |
| Slot Width | 1 in |
| Nominal Duct Opening | 18 × 12 in |
| Neck Width | 11 7/8 in |
| Neck Length | 17 7/8 in |
| Face Width | 13 9/16 in |
| Face Length | 20 1/8 in |
| Airflow | 454 CFM |
| Effective Velocity | 550 FPM |
| Material | Aluminum |
| Applications | Ceiling, Wall, Floor |
| Airflow Control | Adjustable internal airflow wings |
Measure the duct opening, not the old vent face
- Measure the inside opening. Measure from inside edge to inside edge in both directions.
- Match the duct opening size. This product is listed for a 18 × 12 in duct opening.
- Check installation dimensions. Neck: 17 7/8 in × 11 7/8 in. Visible face: 20 1/8 in × 13 9/16 in.
Sizing & Performance
18 × 12 linear slot diffuser questions
What duct opening does this diffuser fit?+
This model is sized for a 18 × 12 in duct opening. Measure the inside opening rather than the outside dimensions of the existing vent face.
Is 18 × 12 the same as 12 × 18?+
Yes. Both describe the same rectangular duct opening. Airvian lists the longer dimension first, so both searches resolve to the same 18 × 12 product.
What are the neck and visible face dimensions?+
The neck measures 17 7/8 in × 11 7/8 in. The visible face measures 20 1/8 in × 13 9/16 in.
What airflow is listed for this diffuser?+
Rated airflow is 454 CFM at an effective velocity of 550 FPM.
Where can this linear slot diffuser be installed?+
The listed applications are Ceiling, Wall, Floor. Confirm that the surrounding construction, support and HVAC design are suitable for the installation.
