Package says 84" but I took them out and measured to be exact and have included those below. I know they get attached quite a few down on grandmas drapes so maybe they are for 84" drapes. New Vintage  Cameo WundaLiner Fits All Unlined Drapery #2851 Lines 1 Pr Drapes. Insulates in Summer or Winter. Blocks out light. This package fits one pair of single width drapes. For double width buy 2 packages. Enclosed is 2 pieces that Measure 33" across ( 66" total) x 70" tall.  Wundaclipsmake adjustments quick without sewing. 100% cotton. As questions see photos. Thanks