supply of card board file , card board file of material: coloured grey board conforms to is: 2617, minimum gsm of folder cover sheet: 340, minimum length of folder: 350 mm, minimum width of folder: 240 mm, numb er of eye lets: 4 nos., location of eye let: in the center of file cover at left side at a gap of 80 mm on fr nt and back covers (two nos. suitable cord required for tightening the relevant documents). n.b.: fron t cover with indian railway logo as per attached annexure. firm has to get prior approval of sample b efore bulk supply. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]