The double scrim white is the two-stop cut for when a source is way over and the DP still wants the area around it to stay bright. Same idea as the black double — knock the level down, leave the quality alone — just without a dark rag eating spill near your subject. LA Rag House sews them in the USA, from the 4'x4' slip-on up to a 20'x20' for the big jobs. When the meter says two stops, this is the pull.