I've seen around the net several pictures of people that have double and even 4 nuc's to a single box. they all have some type of 'cloth' accross them that allow's them to remove the cover, and inspect a single nuc at a time w/o exposing the other 'nuc' in the same box. What type of material are they using? Is is some type of burlap or plastic burlap cover - just cut to the dimensions they need?