This is ONE ROLL of  10 mil thick sheet of DARK GREY Fish Paper. 12 inches wide and 24" long. The original standard dimensions for Telecom Installations. 288 sq. in. of  dark grey insulating fibroid Fish Paper. The new lighter grey color counterpart allows for easy and more visible marking on the paper surface than this  darker version. Both have the same excellent electrical insulating properties. Ideal for all Electrical Insulation. This sheet of paper measures 12" length x 24" width x 0.01" thick and is just slightly larger than our CG560 rolls with a 12" width vs a 10" width for more coverage per sheet. This item is shipped in a roll. Slight variations in the color may occur in multiple rolls.