I would like to build V-Flats for our photography studio. For this, we need light weight foams or PVC (ideal dimensions 1.2m x 2.4m) with a thickness of ~2 or 3cm. One side white, other side black.
The end product would look like the attached photo.
Here is the video that describes exactly what we need:
https://fstoppers.com/diy/how-construct-your-own-high-quality-v-flats-studio-photography-205330
Does anyone know where I could find such boards?