For 2" X 4" wood stud construction. Non-combustible stone wool insulation with melting point of approx. 1177°C (2150°F). Easily cut. Excellent sound absorbency. Fire resistant due to its high melting temperature. Water and moisture resistant; does not absorb moisture to maintain insulating value. Chemically inert. Does not rot, promote mildew, fungi, or bacteria, or sustain vermin. CFC. and HCFC. free product and process. Made from natural and recycled materials