My BP room is mostly done, I just need to do the drop ceiling - so the next project is my filtration system.

I'm in need of some duct work, and of course Lowes, Rona and Home depot don't sell it. They only sell some of the connections etc.

Does anyone know of a HVAC shop that sells ductwork to the public? I live near Vaughan Mills/Canada's Wonderland.

I'm in need of this setup, or something similar:


setup not to scale