Hi, the weight information on the ProLights ECLFresnel 2KVW is incorrect on the library.
The library weights it at 7.8kg while the fixture weighs 17.2kg in reference to the information on their website and physical fixture box. https://www.prolights.it/product/ECLFR2KVWBK
That was indeed a guessed value we used due to a lack of proper documentation at the time we created it. It has now been fixed. You can download the latest library version to check it out.