H 800 grade, h1000 & h 1100 grades std size : 600x150 hysil is the ideal thermal insulation solution for a wide range of verticals, especially in energy-intensive industries. Made with calcium silicate, the hysil blocks can be used to insulate high-temperature applications like ducts, boilers, steam pipe lines and furnaces among many others. Their high load-bearing capacity makes them ideal for heavy-duty equipment across industries. In addition, hysil blocks are literally maintenance-free and have a life of more than 20 years.thickness: 25mm,40mm,50mm,65mm & 75mm