If I were to exhaust welding fumes outdoors through an Ace wall mounted arm and blower, can I retrofit the components to a filtration system should this method become prohibited?

Yes, the Ace stationary system is designed to accommodate such a change in regulations, so you can purchase and install Ace wall mounted arms and blowers with the assurance that you can convert to a filtration system without dismantling your current system. Ask your Ace dealer for more information.