Dude search for you local sheet metal shop and have them custom make what you want.

Thanks, tried that. I need many hundreds and to custom make them will be over $2 per -- just too costly. They used to be prefabed and there's a big market out there for them. I can't seem to find them commercially made anymore though....

Simplicity tooling in Oregon still folds those metal lap siding covers.....check out their website for a Kalifornia dealer near LA:

http://www.simplicitytool.com/

"......measure Once.....cut Twice....

throw that one away and cut a new one...."