Fiberglass E-Glass
Hexcel HiMax Fiberglass E-Glass Fabric Biaxial +45/-45 11.8oz/400gsm-Sample
You will find that the white finish reflects heat slightly better.
Hexcel HiMax Fiberglass E-Glass Fabric Biaxial +45/-45 8.85oz/300gsm-Sample
This comes in white, which is great for a minimalist office setup.
