Reply To: NSF Phase 1 submittal lenght limitation
For clarification on this point, it is best to consult the official NSF Filing Guidelines or contact the contact person listed in the program. Page limits are often strict and can have an impact on the review process, so it is critical to confirm that supporting materials count toward the page limit. Until clarification is received, it is safest to assume that the 15-page limit applies to the entire document, including attachments.