This is a 25 sheet box of Multigrade FB Warmtone Paper. from Ilford . This is an exceptional premium quality, variable contrast black and white, double weight paper rated at 255g/m2. It has a warm black image tone on a warm white fiber base. This paper takes very well to toning. It is fully compatible with all existing Multigrade filters and equipment. It is equally suitable for printing from conventional black and white and XP2 Super negatives. Especially suitable for toning Fully compatible with all existing multigrade filters and equipment The speed of Multigrade FB Warmtone Fiber depends on the filtration used during exposure. Multigrade FB Warmtone Fiber unfiltered, has a paper speed of ISO P500 Can be mounted using the standard techniques for fiber base papers Seven full grades of contrast, in half grade steps