Founding Principal
Inside Matters
LEEDuser Basic Member
7 thumbs up
Representative
Vermont House of Representatives
LEEDuser Expert
7780 thumbs up
Yes, a cut sheet or manufacturer letter acting as self-declaration is sufficient for credit documentation. As far as LEED is concerned, that's sufficient for manufacturers from any location. I can understand the desire for better assurance, in which case third-party testing or certification of manufacturing processes could be requested.