Single card board file top and bottom cover made by 102 DKG straw board [ yellow colour straw board ] size 250mmX350mm joined with blue colour binding cloth in length 350mm Width 150 mm, 25mm cloth pasted on top cover and 25mm cloth pasted at bottom cover, clear gap is 100 mm. Corner of top and bottom cover pasted with triangular shape cloth of size 60X60X90mm properly pasted inside and outside.