PROTECH 400sqft 3mm Thick 3-in-1 Advanced Thermal / Acoustics Plus Foam UNDERLAYMENT with self-Sealing Lip and Tape - Laminate, Vinyl, WPC, SPC, Bamboo, Engineered, and Solid Hardwood Floor - Amazon.com
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Dekorman Laminate Flooring White Foam Underlayment 2 mm Thick x 3.3 ft. W x 91.44 ft. L (300 sq. ft. / Roll) 3WF - The Home Depot
FloorComfort 4-ft W x 25-ft L x 5 T Premium Foam Moisture Resistant Flooring Underlayment (100-sq ft / (Fan fold) in the Flooring Underlayment department at Lowes.com