need help with with windows and door sizes

Hey Everyone. Could one of you tell me the metric sizes of doors and windows most commonly used in the construction of studios with their equivalents in imperial (i.e being the easiest to order). I'm having a hard time finding some manufactures so I can get numbers to go by to use in my program. And I don't know how to convert either. I'm only asking because I'm on here everyday for a few minutes and see alot of things on here and am learning a bunch and would like to throw some ideas back at people who use the metric system. Oh god how I wish we americans would of adopted the metric system so long ago but NOOO we had to be different, it would make things SOO much easier..

I agree Doni - the 1/4" 5/16th divisions are so clunky compared to millimeters. It's funny - I grew up with the imperial system and Pounds Shillings and Pence. We went metric in the mid sixties - I had dollars and cents down in a day - it made so much sense - I've since had to learn metric and similarly - it's so easy :) Your best bet would be to check out your local suppliers either physically or via the net and see what their standard stock is. cheers john

Well the physical part is out of the question because where I live they don't use the metric system period when it comes to building materials here in the USA we only use metric is when it comes to some kind of vehicle. I guess it's time for a google search. But if anyone comes up with something let me know.

I've seen building suppliers in the states refer to mils - like 10mil and 12 mil. I've seen timbers quoted in both imperial and metric on web sites in the US. and download this handy item :) http://noeld.com/programs.asp?cat=misc#unicnv cheers john

Yeah 10 mil and 12 mil is referring to plastic sheet thickness. Drum head manufacturers like Remo and use 7 mil alot in their discriptions of thickness of the heads. But Thank You very much for the link to the conversion program it's greatly appreciated. I can say right now this tool will be invaluable to me and many others who see this thread. I've said this before YOU the man John. So where in aussieland do you live? I have a few friends from the net near perth and wales

If you look at a map of australia I'm on the most easterly point around half way up the country.:) Perth is on the western coast and 'wales' is a state called New south Wales on the east coast. cheers john

Brisbane?