yup, panda plastic 89% reflective and sold at your hydro stores for $90 bucks for a 12'x100' roll or about $1.50 per foot in small quantities...goodluck...also, I lose a little fraction of light, by hanging mine from little screw in hooks, every couple of feet, but you have to be able to put little holes in your ceiling...to me, the grow was worth more than the ceiling! this works good though,especially in the middle of the room, just line out the perimeter with hooks, run a piece of rock and roll (duct)tape, down the edge of plastic and gently push onto hook making little hole, put a couple of pieces of tape on the door edge so you can get inside and you are set..hope this makes sense...goodluck