“3 Part-Spec.”

use these links might be uesful

Useful links

– Database for all materials suppliers and their products’ downloadable information/documents, including “3 Part-Spec.”

https://sweets.construction.com

-Master format Division classifications (attached document)

-Sample online downloadable for some Materials – 3 Part Spec.
https://www.custombuildingproducts.com/3-part-csi-specifications.aspx