Mylar is a metalized plastic sheeting. It will reflect about 98% of the light that hits it. You should put it on the walls around your plants to reflect wasted light back to the plants. It comes in three different roll lengths and two different thickness’, 1 mil and 2 mil. (a mil is 1/1000th of an inch) We recommend the 2 mil for the better workability and strength. It comes in 50” wide rolls.

What would be ”lost” light, now is utilized for maximum efficiency. Attach to any surface for ultimate light uniformity. Get creative: mount to walls, poles, pots. Highly reflective. Use either side: Silver or White. Double the thickness of any other type on the market. 4 Mil thick. 100 foot roll x 4ft. wide. 99% reflective.