We only use polycarbonate IP67 housings for our antennas.
100% UV resistant.
So no cheap plastic boxes.
The wall thickness of the enclosures is 5mm, so due to the pulling force of the wire, the wall of the housing does not move.
Abs we only use for our small portable antennas.
All fastening materials are made of stainless steel.
The antenna wire is made from hard drawn copper with a breaking limit of 40 KG, and with a PE sheath.
So this type of wire does not stretch after a while.
The aluminum mounting plates are made of 6 mm thick cast aluminum 8053 material.
Mast clamps are available in stainless steel.