1 Box of new white industrial seaming/sealing tape. Box of 12 X 4" rolls @ 108 ft/roll. Must buy whole box of 12 rolls for $120.00/box. Works out to $10.00/roll. See spec sheet details below. APPLICATIONS: Basement sealing. Ideal for polyethylene splicing or seaming in construction applications such as stucco fabrication; patching or repairing poly sheeting used in boating and RV industry; surface protection, electroplate masking wire identification and packaging. 4" White Seaming Tape is engineered to seal out gases and moisture. At 4 inches wide, this tape has been designed for excellent adhesion in all conditions, yet easy to peel off the roll. * Seals out bugs, spiders, harmful soil gases and mold causing moisture. * Easily releases off roll, prevents stretching or curling of tape. DATA SHEET: https://www.emecole.com/content/pd/emeseal-white-seam-tape-108ft-4inch.pdf