$34.62, located in Berea, Kentucky, USA (404**), item #131664546022
The 20% VLT Nano Carbon Film has an Optical Density of just 0.76% while a standard carbon coated Film has 5.24%. • VLT (Darkness): 2-3% 5% 10% 15% 20% 25% 30% 35% 40% 50% 70%. • Nano Carbon Infused Premium Polyester Film.