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Front view of a black 20-inch 1-slot linear diffuser with 19mm openings for precision airflow in commercial HVAC systems
Side view of a black 20-inch 1-slot linear diffuser with 19mm openings for precision airflow in commercial HVAC systems
Another side view of a black 20-inch 1-slot linear diffuser with 19mm openings for precision airflow in commercial HVAC systems
Full dimensions of a black 20-inch 1-slot linear diffuser with 19mm openings for precision airflow in commercial HVAC systems
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Linear Slot Diffuser -1-slot submittal
Linear Slot Diffuser - 1-slot comparison
Linear Slot Diffuser - Installation instructions

20" Linear Slot Diffuser Vent Cover (1 Slot with 19mm Opening) - Matte Black - FLO-MATRIX HVAC

FWASD19-1/76W/536L/005
Regular price
$38.27 CAD
Sale price
$38.27 CAD
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HVAC Professionals Pricing

BuyDiscount per unit
6 or more5% off
12 or more10% off
Contact us for pricing on 25 units or more.

Pickup available at Flo-Matrix Air Ventilation Ltd. (Burnaby BC, CANADA)

Usually ready in 24 hours

Details
This 20-inch linear slot diffuser brings both form and function to your space with its sleek matte black finish. Unlike flimsy alternatives, it's built from solid extruded aluminum - the same material architects specify for high-traffic commercial projects. Whether you need consistent airflow in office spaces or precision control for VAV systems, the 19mm slot opening with 180-degree adjustable blades delivers. Check out our smoke test video in the videos section to see the airflow in action. We recommend installation by HVAC professionals for best results.

 

  • Precision Size & Design: Features a clean 20" x 1.5" nominal size with a sharp ¾" (19mm) slot opening for a sleek, modern aesthetic. (Please refer to the size diagram for detailed dimensions).
  • Eliminates Ceiling Smudges: An integrated weather-stripping seal prevents air leakage, protecting your ceiling from unsightly dust marks and ensuring all air is directed through the diffuser.
  • Durable, Commercial-Grade Construction: Built from heavy-duty 6063-T5 architectural-grade aluminum with a tough powder coat finish and reinforced Tig welds to resist cracking, chipping, and bending for a lifetime of performance.
  • Sleek, Flawless Finish: Finished in a sophisticated matte black powder coat, chosen for its superb durability and high resistance to corrosion and everyday wear.
  • Clean, Minimalist Installation: Designed for a flawless look with no visible screw holes. Fastening points are discreetly located on the inner border sides. (Note: Fasteners are not included).
  • Custom Airflow Solutions: Pair this diffuser with a customizable plenum box (sold separately) to perfectly match your HVAC system's requirements. Watch our plenums intro video to learn more.
  • Fast Shipping from North America: We ship quickly from Vancouver, Canada. Orders to the USA typically arrive within 2-7 business days after dispatch.

 

Full dimensions of a black 20-inch 1-slot linear diffuser with 19mm openings for precision airflow in commercial HVAC systems
Performance

 

Performance Data

Flow Rate (CFM)

 Static Pressure (in.wg) Noise Level (NC)

72
100
145

0.11
0.20
0.41

20
30
40

  * Flow rate (CFM) and static pressure (in.wg) are interrelated. It is crucial to know your HVAC system total or static pressure when choosing the proper GRD for optimal performance.

 

Resources

 

Our Guide to 19mm VS. 25mm Slot Width Differences

 

Linear Slot Diffusers: The Smart Choice for Modern HVAC Systems

 

CFD Airflow Analysis Services for Smarter HVAC Design

 

 

What Makes a Grille, Register, or Diffuser "Commercial Grade"?

True commercial-grade GRD products provide architects, engineers, and HVAC professionals with the complete technical data needed for precise project specification. This includes detailed information on material composition and comprehensive performance metrics like flow rates, pressure drop, and noise criteria (NC).

All our products are rigorously tested in accordance with ADC1062:GRD-84 and the ASHRAE 70-2006 standards. We leverage computational fluid dynamics (CFD) and modern testing to continuously refine our designs for optimal performance and energy efficiency.

Since 1997, we have been a trusted manufacturer of high-quality linear slot diffusers (from 1 to 12 slots) for the commercial HVAC industry. For project-specific questions and expert guidance, please contact our product specialists at +1-604-437-1527.

 

 

Videos

 

Showcase Video of Product - 1 Slot Linear Diffuser

 

Demonstration of airflow direction adjustment - 1 Slot Linear Diffuser

 

How to insert a linear slot diffuser into a plenum

 

Linear Slot Diffuser Smoke Test (Vertical Throw) Video - 1 Slot

 

Linear Slot Diffuser Smoke Test (Horizontal Throw) Video - 1 Slot

 

Videos of previous custom plenums

 

 

Our retail store showroom - Greater Vancouver, Canada