free-standing insert
noun[C]
MARKETING,COMMUNICATIONSukus(abbreviationFSI)aloosepieceofpaperthat isaddedseparatelyto anewspaperormagazineand thatcontainsadvertisementsorcoupons(=piecesofpaperthat can be used tobuygoodsat areducedprice):
About 90% ofcouponsaredistributedthrough free-standinginserts,primarilyinSundaypapers.