Specification, model and size of scaffold

I know the specifications, models and dimensions of scaffolding:

There are many specifications, models and sizes of scaffolding. Common portal scaffolds are1220× 914mm,1220× 490mm,1219×1700mm,1220. Common dimensions of half-price scaffolding are1219× 914 mm, 12 19 mm, etc. Common dimensions of mobile scaffolding are 1700×950× 1800 mm,1900×1250×1800 mm, etc. In addition, there are types such as snap-in scaffolding.