Crafted from heavy-gauge aluminum, this white 12" mud-in slot diffuser delivers precise airflow control for both standard and VAV systems. The 25mm adjustable blade design ensures optimal performance while maintaining structural integrity.
These premium quality flush-mount units integrate seamlessly with drywall finishes. Cheaper alternatives often suffer from warped frames, noisy airflow, or cracking during installation - issues that require costly wall repairs.
Specified by discerning HVAC professionals, our diffusers combine durable construction with clean aesthetics for lasting performance. Their embedded design makes initial quality selection crucial, as replacements mean significant drywall demolition.
Please watch our smoke test video for air distribution performance. We recommend installation by professionals for this product.
- Precision Size: 12" x 2" (nominal). Please consult our detailed size chart for exact dimensions and cutout specifications.
- High-Capacity 1" Airflow: The wide 25mm (1-inch) slot opening is engineered to move a greater volume of air more efficiently than standard 19mm slots.
- Seamless Flush-Mount Finish: A ribbed border allows for easy concealment with drywall filler, enabling a clean, built-in look that blends into your ceiling.
- Prevents Ceiling Stains: A built-in weather-stripping gasket stops air leaks, shielding your ceiling from dust buildup and ensuring optimal airflow direction.
- Clean, Minimalist Aesthetic: Achieved with no visible screw holes after mudded in; additional fastening is also done discreetly on the inner border for a flawless profile (fasteners not included).
- Architectural-Grade Material: Constructed from 6063-T5 Grade extruded aluminum, the architectural alloy known for its excellent strength, superb finish quality, and high corrosion resistance.
- Premium Matte White Protection: Boasting a high-quality matte white powder coat, this finish is engineered to be highly resistant to everyday scratches, corrosion, and the effects of fading.
- Ultimate Versatility: Functions perfectly as both a supply or return air terminal for flexible system design.
- Extensive Customization: Available with mitered corners, custom angles, and tailored lengths to fit any project specification.
- Complete Project Support: CAD (DWG) and BIM (Revit) models are available upon request to streamline your design and installation process.
- Expert Quotes: Receive a personalized project quote based on your specific drawings and requirements.
- Optimized Performance: Pair with a customizable plenum box (sold separately) to ensure ideal airflow and system efficiency.
- Fast North American Shipping: Dispatch from Vancouver, Canada within 2 business days, with USA delivery in 2-7 business days.
Performance
| Performance Data | ||
|
Flow Rate (CFM) |
Static Pressure (in.wg) | Noise Level (NC) |
|
43 |
0.09 |
20 |
| * 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. |
Submittal
Click here to download a high resolution of this submittal sheet
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
Defining "Commercial Grade" in Air Distribution Products
What truly separates commercial-grade grilles, registers, and diffusers? It's the comprehensive engineering data that allows HVAC professionals and design teams to specify products with absolute confidence. This means full transparency on the materials used and certified performance results for critical factors such as noise generation, airflow volume, and static pressure loss.
To guarantee this performance, every product is validated against the stringent protocols of ASHRAE 70-2006 and ADC1062:GRD-84. Our R&D process integrates cutting-edge CFD simulations alongside physical testing, ensuring our designs deliver superior efficiency and performance.
We've been a leading manufacturer of commercial linear slot diffusers (offering 1 to 12 slots) since 1997. Have a project that requires expert insight? Our product specialists are ready to assist you at +1-604-437-1527.
Videos
Mud-In Flange Linear Slot Diffuser Video
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
Let customers speak for us
I’m a returning customer for a few reasons... Sturdy construction, easy installation, the vents show up as ordered, and good communication. Highly recommend!
Quick shipping, product as advertised, would recommend.
I knew about the fair price and the product being in stock and off the shelf ready for shipment. I did not know or even expect -----
OUTSTANDING
Service
Product
Tracking
Delivery
Awesome, exactly as advertised.
I recently purchased linear air diffusers and couldn’t be more satisfied with the entire experience. The quality of the product is absolutely top-notch—sleek, durable, and designed to perfection. They added a modern and clean look to my space while performing exceptionally well.
There was a slight mix-up with my order, but I was incredibly impressed with how efficiently and professionally it was handled. The issue was resolved quickly and at no extra cost, showing their dedication to customer satisfaction.
Shipping was also impressively fast, and the diffusers arrived well-packaged and in perfect condition. I highly recommend these diffusers and this company for their excellent products and outstanding service!
Smooth communication from beginning till end. Highly recommend, very professional.
Great
Did a complete remodel of my condo and upgraded the vents to the linear.
Great quality at a good price !!!
Great quality at a good price !!!
