BOLD® - Black Out Light Deprivation Tarp is the #1 requested light deprivation greenhouse cover in the nation because it is 100% light blocking, with no pinholes or perforations! Our black out light deprivation tarp is an 8 mil Black/White string reinforced polyethylene film manufactured with a mix of virgin polyethylene resins. The white outer layer contains UV inhibitors and thermal stabilizers to reduce heat build-up as well as condensation and the black outer layer contains carbon black to enhance outdoor life and ensure total light deprivation. BOLD® Black Out Light Deprivation greenhouse tarp is strong and durable because it consists of two sheets of high strength virgin polyethylene film laminated together with a third layer of molten polyethylene. A heavy scrim reinforcement placed between these plies greatly enhances tear resistance and increases service life. The diamond reinforcement instantly responds to rips and tears by surrounding and stopping it. Top Features: • No Pinholes/No Perforations • Scrim Reinforced for excellent tear strength • Provides total darkness • UV resistant and heat reflective • Withstands both heat & cold (-70° to 180° F operating temperature.) Material is available in custom sizes up to 330ft wide.