Square key
![](https://www.oversea-online.com/wp-content/uploads/2017/05/bb1d3943af2a66ac270bed72d39cb721.jpg)
The square key to open the inspection hatch is made of self-destroying plastic, “class V0”.
It is weather resistant and resistant to temperatures from -20° up to +120° Celsius.
The square key to open the inspection hatch is made of self-destroying plastic, “class V0”.
It is weather resistant and resistant to temperatures from -20° up to +120° Celsius.