Locking Copperhead

Really useful box ok for copperhead?
A question for venomous keepers, would a really useful box (of adequate size for the species of course) be ok for a copperhead? It’ll be kept in a secure room, heated externally and the box will have multiple locks on it. I’ve heard of them being used for venomous before, rattlers usually, but I was wondering if anyone could see any problems?
Thanks
http://www.reptileforums.co.uk/newbie-advice/112026-how-house-your-first-snake.html
Some info about RUB’s, for those who don’t know what I’m talking about
Just to clarify, I’m thinking in terms of security – I already keep various snakes in RUBs so i know they work, I’m just worried it won’t be ok for a venomous.
It will be fine for venomous species as well. I seriously love RUBs. They are inexpensive and do the job beautifully.
Yakima Copperhead Bike Rack Review Video & Demo – 8002064