Airvian Linear Slot Diffuser
38x18 Linear Slot Diffuser – 9 Slots
Designed for a 38 × 18 in duct opening, this 9-slot aluminum linear slot diffuser is rated at 1436 CFM at 550 FPM. Listed for ceiling, wall and floor applications.
- Neck size
- 37 7/8 in × 17 13/16 in
- Visible face
- 40 1/8 in × 19 7/16 in
- Airflow
- 1436 CFM
- Slots
- 9 slots
- Material
- Aluminum
- Applications
- Ceiling, Wall, Floor
Airflow control: Adjustable internal airflow wings
Product Details
Designed for a 38 × 18 in duct opening.
The diffuser uses 9 1 in-wide slots. Built from aluminum.
Rated airflow is 1436 CFM at an effective velocity of 550 FPM.
Applications: Ceiling, Wall, Floor.
Airflow control: Adjustable internal airflow wings.
Full Specifications
| Slots | 9 |
|---|---|
| Length | 38 in |
| Slot Width | 1 in |
| Nominal Duct Opening | 38 × 18 in |
| Neck Width | 17 13/16 in |
| Neck Length | 37 7/8 in |
| Face Width | 19 7/16 in |
| Face Length | 40 1/8 in |
| Airflow | 1436 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 38 × 18 in duct opening.
- Check installation dimensions. Neck: 37 7/8 in × 17 13/16 in. Visible face: 40 1/8 in × 19 7/16 in.
Sizing & Performance
38 × 18 linear slot diffuser questions
What duct opening does this diffuser fit?+
This model is sized for a 38 × 18 in duct opening. Measure the inside opening rather than the outside dimensions of the existing vent face.
Is 38 × 18 the same as 18 × 38?+
Yes. Both describe the same rectangular duct opening. Airvian lists the longer dimension first, so both searches resolve to the same 38 × 18 product.
What are the neck and visible face dimensions?+
The neck measures 37 7/8 in × 17 13/16 in. The visible face measures 40 1/8 in × 19 7/16 in.
What airflow is listed for this diffuser?+
Rated airflow is 1436 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.
