Drywall tape. 300 ft. x 1 7/8 in. 100% fibreglass mesh drywall joint tape, it is innovative and compatible for use with mildew resistant and paperless drywall. Features an anti-microbial coating for a safer environment. Anti-microbial properties repel fungus and black mold. Received a perfect 10 rating on the ASTM mold test No. D3273.