Laird has various "standard" sizes, you should look at their catalogue.
May be not so cheap but it will save you a huge amount on tooling
They can also do custom products

At 22:48 01/04/2008, you wrote:
>Hello all, I'm working on Zigbee module designs, and one regulatory
>requirement is to have the RF section at least under a metal "lid",
>basically a 5-sided thin aluminum "box".  These are going to be made in
>high volumes, so paying NRE for something custom is not a problem.
>
>Ideally it would be around 0.7" square and 150mils tall.
>It has to be SMT though.

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