Wireway to transformer connection

[pollobot]

I want to use a 6x6x6 wireway to feed a transformer rather than mess with 3 runs of large flex. The wireway will contain 9 #400 and 1 3/0, I will use a 4" chase nipple on the switchboard side. The problem is the engineer wants a flexible connection at the transformer, I have seen these before, I think it was a rubber boot of some sort. Anyone know who makes them or what the trade name is?

 

[wireman]

I want to use a 6x6x6 wireway to feed a transformer rather than mess with 3 runs of large flex. The wireway will contain 9 #400 and 1 3/0, I will use a 4" chase nipple on the switchboard side. The problem is the engineer wants a flexible connection at the transformer, I have seen these before, I think it was a rubber boot of some sort. Anyone know who makes them or what the trade name is?

Check with Rittal, Hoffman, or Wiegmann. They all make trough.