The Airguard 100 Sq. Ft. 40 In. X 30 Ft. X 2 Mm 5-In-1 Underlayment with Microban is a versatile and high-quality product designed for both commercial and residential use. This underlayment provides coverage for up to 100 square feet and includes one roll with a thickness of 78.7 mil. Made of antimicrobial plastic material, it offers cushioning and sound absorbing features, making it suitable for engineered hardwood and laminate floors. The recommended overlap is 4 inches, and it is suitable for any subflooring type. This product also comes with a limited manufacturer warranty in conjunction with floor manufacturing.