Galfan is an alternate to traditional zinc coating (galvanised) that offers a mix of zinc and alloy (Zn-5% Al). Galfan coating has claims to have superior corrosion resistance.
Maintaining a 50x50mm mesh size provides a gabion with more steel and more weld points throughout the basket giving it superior strength over 75x75mm or 100x50mm mesh.
4mm Gauge Wire
A wire size of 4mm ensures the basket remains rigid without bellowing and warping when full like lower gauge wire does.