The Ridder Black Out Screen provides 99.9% light deprivation.

• Gain complete photoperiod control and supports a superior growing environment.
• This highly effective blackout curtain provides 99.9% shading in both direct and diffused light of 400 PAR.
• When properly utilized, can save energy by as much as 74%.
• Designed with three-layer construction. The top layer is white/black/black, the middle layer is black/black and the lower layer is black/black.
• Made from 62% polyolefin and 38% polyester.
• Flame retardant.
• 13.1' wide.
• Sold by the foot, maximum roll size is 240 foot.
• 5 year warranty.

California Residents: Warning: Cancer and Reproductive Toxicity - P65Warnings.ca.gov