HTGSupply 50 Foot by 4 Foot Reflective Mylar Roll, 2-Mil Double-sided silver metalized reflective Mylar liner Heavy-duty, tear resistant 2-mil (.002-inch) thickness Hangs easily using tape, staples, tacks, adhesive, etc. Please Note: This material does not produce a clear mirror image, and thus is not recommended for visual applications in which this quality is desired. Roll measures: 50' long x 4' wide