File Straw Board To Size 23cm X 35 Cm ( [File Straw Board To Size 23cm X 35 Cm (/ 1 Cm) With 8 Cm Clear Spines Excluding Pasting Portion Of The Flap Along With 2 Nos Of Transparent Perplex Sheet Of Size 150mmx25mmx2mm With 2 Holes Centrally Punched With 7.9cm Distance Between The Hole. File Material Is Of 2.5 Mm To 3mm Thick Straw Board. Binding Cloth To Be Pasted On All The Edges Of Each Flap In Apportion Of 20 Mm & Also On The Middle Portion Of Both Parts , Spines At Centre Joint Space