1. Choose 2mm thickness (Light-duty, short-term/decorative scenarios)
Suitable Scenarios:
Small decorative flower boxes (size ≤ 60cm×40cm×30cm):
For small potted plants (e.g., succulents, herbs) with light load (total weight ≤ 10kg);
Placed in sheltered, collision-free environments (e.g., balconies, indoor terraces).
Temporary landscape installations (service life ≤ 2 years):
Short-term decorative boxes for events/exhibitions (no need for long-term durability).
Hanging/wall-mounted flower boxes:
Low self-weight (a 60cm 2mm box weighs ~2-3kg) to avoid overloading the hanging structure.
Advantages:
Lower cost (2mm sheets cost ~40%-50% less than 5mm);
Lightweight for easier transportation and installation.
2. Choose 5mm thickness (Heavy-duty, long-term/outdoor scenarios)
Suitable Scenarios:
Large freestanding flower boxes (size ≥ 100cm×50cm×40cm):
For large plants (e.g., shrubs, small trees) or full planting soil (total weight ≥ 50kg) - requires sufficient structural strength to prevent deformation.
Outdoor public areas (e.g., parks, commercial streets, community green spaces):
Withstands wind, sun, and occasional impacts (e.g., pedestrian/cleaning tool contact) - 5mm thickness offers better deformation resistance.
Long-term use (≥ 5 years):
Thicker sheets form a more stable rust patina, reducing fatigue/cracking in long-term outdoor conditions.
Low-temperature/windy environments (e.g., northern outdoor areas, coastal regions):
Better resistance to low-temperature brittleness and wind pressure, avoiding winter frost heave or wind-induced deformation.
Advantages:
Strong structural stability (less prone to deformation/damage);
Longer service life, reducing maintenance/replacement costs.
3. Compromise Recommendation (Uncertain scenarios)
Summary
