... fold and carry 3.advertising banner stand, info board stand,display stand Size avaliable:A0,A1,A2,A3; Application:Suitable for any sales promotionIt ... , school and so on.adcolumn, billboard, sign stand etc... Maybe it has a lot of different name, but it's only usage ... fold and carrySnap frame open easyStable and durableEasy to change poster Double sided, Without Top Board/Header Stable Poster stand