Fannie Mae Selling Guide C3-4-01: Term-Related Fixed-Rate Mortgage Pooling Parameters
Fannie Mae issues and specially designates securities backed by either government-insured or government- guaranteed loans or conventional loans.
Fannie Mae publishes the full text of this section: Fannie Mae Single Family Selling Guide on the Fannie Mae website. Zeitro Strata answers questions about it with the passage and page cited.
What this section covers
- 30-year (Long-Term) FRM MBS / UMBS
- 20–year FRM MBS / UMBS
- 15-year (Intermediate-Term) FRM MBS / UMBS
- 10–year FRM MBS / UMBS
Guideline text quoted as published by the agency. The latest published version governs. This is not an underwriting decision.

