I suppose the brackets could be put on the wrong side but it seemed to me which side they should go on. My packages weren't labeled as to which side. The directions, i.e. drawings or pictures weren't very clear. Also if you haven't done yours yet, be careful of the tape holding the handles in. If a handle comes out the spring may drop off and it is quite confusing how it is supposed to fit. My biggest issue was the tumblers. I don't what I did wrong but the key slots are 90* out from each other. I tried fixing it but gave up after a couple of tries. A fair amount of disassembly has to take place to get to the locks. I fixed them so that they can be opened and closed without the key. I live in an area where locking stuff isn't always necessary. Loggers leave their expensive Stihl chain saws out in the open in the back of their trucks.
kk