You serious man? What does a 5" by 28" pipe cost? The cheapest oneI work construction and can get any size,color or length you would need if anyone wants pvc. just throw me a few bucks and pay shipping and ill help you out
If you can please check and see if you got 5" pipe please!lol i have no clue i am a mason, I just pick up what isnt used by the plumbers. it is the very thick stuff usually also..id take what anyone thought was fair and them pay shipping . i have a lot of 6 inch right now.. but im not sure i have 5 i have 3,4 and 6 and a lot of each.. i make aero ports with it i rarely build an enclosure with a slot port hate to waste wood and seems to be more efficient.. def. cost effective for myself haha cannot beat free