[Greenbuilding] Untreated nails, non-PVC window screens, and formaldehyde-free doors

[Irina Golfman]

I am trying to locate window and door screens that do not contain PVC. Does 
any one have a source for these?

How about untreated nails? Are they compatible with standard nail guns?

Interior solid core doors that do not contain formaldehyde? I found some 
custom-made doors, but was hoping to find a stock door as I assume it will 
be significantly cheaper.

Thank you so much for the help.

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Irina