Q. Shoji screen substitute material

The Rakow Library does not have resources to identify current flat glass products.

To learn more about options for glass that may be used to create Shoji screens, contact the Decorative Glazing Division of the Glass Association of North America (GANA). The division is "comprised of manufacturers of decorative glazing products, their suppliers, and installers/glazing contactors." For more information: https://www.decorativeglazing.com/; GANA: https://www.glasswebsite.com/

You may wish to explore the web for additional flat glass manufacturers associations, but the Decorative Glazing Division seems to meet your goals. Others include:

https://www.glassforeurope.com/en/industry/main-european-manufacturers.php

https://www.glass.org/

https://www.glassbuildamerica.com/official-partners.html

Major flat glass manufacturers include:

https://corporate.ppg.com/Businesses/Flat-Glass.aspx

https://www.pilkington.com/

There are web listings of flat glass companies:

https://www.thomasnet.com/

https://www.manta.com/mb_35_E80D3000_000/flat_glass

You may wish to consult a materials library for specific ideas for plastic or glass, for example: https://www.arlisna.org/publications/arlis-na-research-reports/publications-archive/162-resource-guide-materials-libraries