... 3.0.21*0.3M A1,A2,A3,A4 snap poster frame,photo aluminum material frame a4 size Art.NoFLY-SNP-1MaterialAluminum, steelColorSliverN.W ... poster standSnap aluminum frame A-boardBoard Snap Frame Double Sided.Increase your advertising with this easy change double sided A1 size poster ... relative humidity of 50%.(6).Transportation : A1,A2,A3,A4 snap poster frame,photo aluminum material frame a4 size