Wall Mounting a SG125

Partners,

We have a new business line that is selling SG125's like crazy.  However, the people they are selling them to do not typically have racks so the rack mount solutions do not work.  Typically they are mounted to a wallboard in the office with the telephony equipment.  Can anyone tell me what your mounting solutions have been when mounting them to a wallboard like this?  You can't turn the brackets in the rack kit because they are actual rails.

Thanks for any solution you have.  Any pictures would be greatly appreciated also.

Thanks,

Marcus Johnson

Sophos Certified Architect