Airvian Linear Slot Diffuser
28x20 Linear Slot Diffuser – 10 Slots
Designed for a 28 × 20 in duct opening, this 10-slot aluminum linear slot diffuser is rated at 1176 CFM at 550 FPM. Listed for ceiling, wall and floor applications.
- Neck size
- 27 7/8 in × 19 3/4 in
- Visible face
- 30 1/8 in × 21 3/8 in
- Airflow
- 1176 CFM
- Slots
- 10 slots
- Material
- Aluminum
- Applications
- Ceiling, Wall, Floor
Airflow control: Adjustable internal airflow wings
Product Details
Designed for a 28 × 20 in duct opening.
The diffuser uses 10 1 in-wide slots. Built from aluminum.
Rated airflow is 1176 CFM at an effective velocity of 550 FPM.
Applications: Ceiling, Wall, Floor.
Airflow control: Adjustable internal airflow wings.
Full Specifications
| Slots | 10 |
|---|---|
| Length | 28 in |
| Slot Width | 1 in |
| Nominal Duct Opening | 28 × 20 in |
| Neck Width | 19 3/4 in |
| Neck Length | 27 7/8 in |
| Face Width | 21 3/8 in |
| Face Length | 30 1/8 in |
| Airflow | 1176 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 28 × 20 in duct opening.
- Check installation dimensions. Neck: 27 7/8 in × 19 3/4 in. Visible face: 30 1/8 in × 21 3/8 in.
Sizing & Performance
28 × 20 linear slot diffuser questions
What duct opening does this diffuser fit?+
This model is sized for a 28 × 20 in duct opening. Measure the inside opening rather than the outside dimensions of the existing vent face.
Is 28 × 20 the same as 20 × 28?+
Yes. Both describe the same rectangular duct opening. Airvian lists the longer dimension first, so both searches resolve to the same 28 × 20 product.
What are the neck and visible face dimensions?+
The neck measures 27 7/8 in × 19 3/4 in. The visible face measures 30 1/8 in × 21 3/8 in.
What airflow is listed for this diffuser?+
Rated airflow is 1176 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.
