PAROC Pro Slab rock wool slab is designed for thermal and sound insulation of flat surfaces, large tank walls in low-temperature, large power boilers, electrostatic precipitator, flue gas duct, flue gas desulphurization installation and as a filling of tin coffers in. Numbers 60, 80, 100, 120 used in the product name indicate its nominal density. PAROC Pro Roof Slab load-bearing stone wool slabs intended for roof insulation. The recommended roof layer arrangement is 2/3 of the target thickness of PAROC Pro Roof Slab 20 kPa from below, then 1/3 of the target thickness of PAROC Pro Roof Slab 50 kPa . The numbers 20, 50 used in the product name indicate the compressibility test parameter. PAROC Fire Slab 90 stone wool slab is designed for thermal insulation of the duct in flue gas, combustion chambers, high temperature boilers, chimney and other surfaces exposed to constant high temperatures.