The D200 is an opening protective made of a flexible fire-rated fabric that is US laboratory tested and approved for unlimited widths.A first in the industry, the D200 carries a 20-minute rating UL10B and UL10C without hose stream, UL 10D for up to 3 hours, and UL 1784 for smoke and draft. FireFighter D200 is approved for use in multiple applications – whenever the 20-minute UL 10B or UL 10C rating is required for a fire door or shutter used to provide protection for an opening of any size in a rated wall.