Roberts Underlayment Seam Tape for Flooring, Red item number 50-040. SHIPS FREE. Tape is 1-7/8” wide and originally was 100” in length, but it appears a small amount of tape has been removed from the roll. It is unknown exactly how much was removed. The remaining tape on the roll is in like-new condition as shown in the photos. Opened package. This tape is moisture resistant for joining floating floor underlayment seams, underlayment repair, carpet padding seams, and also for general use such as packing and sealing up boxes. Easy tear.