Custom Plenum Box - Built to your specifications by Flo-Matrix HVAC

Need a custom plenum for your linear slot diffuser? We build them to fit your exact needs!

While we are known for our air vent covers, we also design and fabricate plenum boxes for a wide variety of HVAC systems. Whether you are working on a tight commercial job or a tricky residential retrofit, we can build a plenum that fits perfectly and moves air the way it should.  

Here’s How It Works:  
Getting a custom plenum from us is straightforward:  

1. Tell us what you need – Send over your specs (size, material, insulation or not, connection points—whatever that is important).  
2. We will draw it up – You will get a clear 3D design to review before we touch any metal.
3. We build & ship it – Once you approve, we fabricate your plenum with tight welds and clean seams.  

Why our customers stick with us:  
- No guesswork – You get a rendered drawing for approval first.  
- Built for performance – Smoother airflow, less noise, and no leaks.  
- No Surprises – You see the design first, so you know exactly what’s coming.

Take a look at some of our recent jobs:  

 

 

 

Need a quote? Let’s talk.  
Give us a call at 1-604-437-1527 or email contact@linearairdiffusers.com —we’ll get back to you with pricing and lead time.