Large Banner Questions

I am currently running a banner 240" by 42" on 13 oz with a 1 inch heat hem and grommetts. Small world

 

That will all be fine. $5 sqft would be a bit higher for us on that square footage, but if you can get it. Great!

Edit: Whoa. I kind of skimmed through that. Glanced over the fact that it was 4w x 20h between two poles instead of 4h x 20w on a wall or something. That banner will get about 15.35 lbf/ft2 in 75mph winds. So make sure the poles are strong enough and that the mounting hardware is good for that too.

 

13 oz will hold up fine. Back in my print shop days we made a 5' x 25' banner that hung below a billboard. It was up for about a month and was fine when we took it down.

 

yeah that'll be more than enough. make sure on the install that their system is not essentially making a sail though. without that, you may have a shredded banner, especially in inclement weather. wind slits may help there.