STRONG C5 A5 SIZE BOX 160x230x22mm ROYAL MAIL LARGE LETTER CARDBOARD SHIPPING
LARGE LETTER BOXES. MADE FROM A HARD 1.2mm THICK SINGLE WALL CARDBOARD. EXTERNAL SIZE:230mm x 165mm x 22mm (9" x 6.5" x 0.8" ) - LARGE LETTER QUALIFYING. IV, HS,KA27-28, KW, PA20-49, PA60-78, PH17-26, PH30-44,PH49-50, ZE, BT,IM,TR21-25.