Catalogue glass as separate thickness variants

Define each available thickness of a glass type as its own catalogue entry so plain, black tinted and brown tinted glass are catalogued per thickness.

1. Glass is catalogued as separate thickness variants rather than one material.

   ✓ 2026年10月11日に製品で確認済み

2. For a given glass type (plain, black tinted, brown tinted), you define each available thickness as its own entry, e.g. 4 mm, 6 mm, 8 mm, 12 mm.

   ✓ 2026年10月11日に製品で確認済み