If the specs on the websites (german and english, UK and USA) are correct, the NovaTone enclosures are ridicolous heavy (I calculated the lbs here, on their page only the kg are written):
112: 23.4 kg (51.6 lb.)
210: 33.9 kg (74.4 lb.)
115: 35.1 kg (77.4 lb.)
212: 38.1 kg (84.0 lb.)
410: 54.6 kg (120.4 lb.)
I contacted the german G4M-support and they don't seem to understand the problem. On Talkbass is also a great diskussion about these numbers. The 410 would be 11kg heavier as the original D410XLT, which was a heavy beast.