It looks like 703, but the site won't let me view the specs without a password. Idiots!
I browsed the site and found a literature page has the pdf data sheet available.
Certain Teed Literature Page
The setup of the page won't give me the URL directly for the document. It is under "product spec sheets" and the line with 330 under fax number.
The bottom line is you are 100% correct. It is Certain Teed's version of OC 700 series material.
