Start with the use case, not the product name
Use this guide when comparing profile sizes such as 68 x 122 mm, 108 x 150 x 3 mm or 112 x 203 mm project notes.
Translate the requirement into measurable inputs
Provide location, wind and snow expectations if known, ground condition, enclosure type, doors and accessory loads.
Confirm scope before comparing suppliers
Do not compare strength by profile size alone; bracing, bay spacing and anchoring matter.
