... size & style for option 3,Widely use in exhibition booth 4x4 Portable Pop Up display(PU-58A)Material:AlunimunColour:Silver whitePop ... ,3x3,3x4 and so on.The assemble of whole set 4x4 pop up1 set 4Ă—4 pop up frame 6 pcs ... stands,flag banners,advertising banner,panels,poster frames,promoters ect. 4x4 Portable Pop Up Display