Schluter Kerdi-Band 5 in x 32 ft. 10 in x 4 mil Underlayment Waterproofing Strip
It is installed with unmodified thinset to ensure a fully water-tight seal to prevent leaks. Thickness is 4 mil. Ensures a fully water-tight seal preventing leaks and mold growth. Roll is 5 in. wide and 32 ft. 10 in.