Quick answer: use crop type, greenhouse layout, support method and expected service life as the selection criteria before comparing price.

The core difference

A 0.7 mm gutter usually provides stronger rigidity and better resistance under heavier crop load or wider support spacing. A 0.6 mm gutter can be suitable for cost-sensitive projects with proper support design.

Do not select by thickness alone

Crop load, support spacing, greenhouse humidity, installation method and expected service life should be evaluated together.

Ask for project matching

The safest decision is to send greenhouse dimensions and crop type so the manufacturer can recommend a suitable profile and support plan.

Buyer checklist

  • Use 0.7 mm when load and rigidity are priorities
  • Use 0.6 mm only with suitable support design
  • Check coating and structure together
  • Confirm final selection with project drawings