I have been tasked with designing a digital billboard image at work and I created the design in Figma. The company requested the design file in 400x1200 @144ppi. This is going to be a 14’x48’ digital billboard, so I need the image to be as crisp as possible… But I am at a loss as to how to export this properly.

I designed it on a 400x1200 frame and thought by just exporting as an SVG at 2x it would work. I was wrong. The image came out blurry and larger. I tried googling how to make this happen but got confused so I was hoping someone here could assist a newbie understand how to get this done? thank you