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Linear Slot Diffusers
Aluminum Construction6–84 in. Lengths2–24 in. Widths

Airvian Linear Slot Diffuser

36x20 Linear Slot Diffuser – 10 Slots

$299.99$399.99
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Designed for a 36 × 20 in duct opening, this 10-slot aluminum linear slot diffuser is rated at 1512 CFM at 550 FPM. Listed for ceiling, wall and floor applications.

Fits this duct opening36 × 20 in36 × 20 and 20 × 36 describe the same rectangular opening.
How to measure
Neck size
35 7/8 in × 19 3/4 in
Visible face
38 1/8 in × 21 3/8 in
Airflow
1512 CFM
Slots
10 slots
Material
Aluminum
Applications
Ceiling, Wall, Floor

Airflow control: Adjustable internal airflow wings

SKU: AVN-36X20

Product Details

Designed for a 36 × 20 in duct opening.

The diffuser uses 10 1 in-wide slots. Built from aluminum.

Rated airflow is 1512 CFM at an effective velocity of 550 FPM.

Applications: Ceiling, Wall, Floor.

Airflow control: Adjustable internal airflow wings.

Full Specifications

Slots

10

Length

36 in

Slot Width

1 in

Nominal Duct Opening

36 × 20 in

Neck Width

19 3/4 in

Neck Length

35 7/8 in

Face Width

21 3/8 in

Face Length

38 1/8 in

Airflow

1512 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

  1. Measure the inside opening. Measure from inside edge to inside edge in both directions.
  2. Match the duct opening size. This product is listed for a 36 × 20 in duct opening.
  3. Check installation dimensions. Neck: 35 7/8 in × 19 3/4 in. Visible face: 38 1/8 in × 21 3/8 in.
Open the measuring guide

Sizing & Performance

36 × 20 linear slot diffuser questions

What duct opening does this diffuser fit?+

This model is sized for a 36 × 20 in duct opening. Measure the inside opening rather than the outside dimensions of the existing vent face.

Is 36 × 20 the same as 20 × 36?+

Yes. Both describe the same rectangular duct opening. Airvian lists the longer dimension first, so both searches resolve to the same 36 × 20 product.

What are the neck and visible face dimensions?+

The neck measures 35 7/8 in × 19 3/4 in. The visible face measures 38 1/8 in × 21 3/8 in.

What airflow is listed for this diffuser?+

Rated airflow is 1512 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.