Any idea whose shingle has this tape code?

looks like OC 20yr classic. Could be a knock off, but with so many white label crap in the market, you have to be a slueth or like me, know the seal tape.

Sorry not to be able to help. Probably the same company that made my mattress.

I spent 4 years in jail doing hard time for pulling off a mattress label. :wink: