Rob,

Slotted stainless steel angle; 1/8" horizontal slot through the back of the cabinet and the upturned angle gets screwed from the backside to the cabinet back.

PM your e-mail and I can send you the pdf sketch.

Tom Flynn
_________________________
Tom Flynn
NRA Endowment
RKS#5918
RKCC-CM-178
SCI Life Member
DSC Life Member