HTGSupply 10 Foot by 50 Foot Heavy-Duty Black & White Poly Panda Film, 6 Mil Dual-sided polyethylene tarp / liner ; black on one side, white on the other Heavy-duty 6-mil (.006-inch) thickness Lightproof ; waterproof ; 90% reflective white side Hangs easily using tape, staples, tacks, adhesive, etc. Measures: 50' long x 10' wide - Please note: 30" poly roll unfolds to full 10' width