Black/White Poly 100 Foot Roll (BWP-100)BLACK & WHITE POLY This Heavy Duty 6 mil Black & White poly is a plastic that is black on one side and white on the other. It can be used to cover up windows, make partitions and reflect light onto the plants. It is great for partitioning off spaces, as it is very tough, reflective, and can be handled on a daily basis without damage or tearing. The white side reflects 90% of all light. It is 6 mil thick and is sold by the roll and by the foot. It comes 10’ wide. This is not the cheap 4 mil stuff.
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