Fibre Paper and Fibre Blanket

Refractory fibre is generally divided into paper and blanket.  There is a distinction between the two relating to binders and thickness.

Papers are those which have binders to keep the pressed fibres in a sheet or roll.  These binders burn off during the firing process

Blanket does not have binders and is much thicker.

These two forms of refractory fibre generally exhibit a difference in thickness.  

Papers range from cartridge paper thickness, to around 6mm thick.  

Blanket tends to be 25mm and thicker, although there is some 12mm I understand.