Extra Large-Sized Poster 24" x 36" QuantumPostcards Support November 10, 2020 18:13 Updated Click on the file below to download Guideline Templates. Extra Large-Sized Poster 24x36.pdf 70 KB Download Extra Large-Sized Poster 24x36.jpg 5 MB Download Extra Large-Sized Poster 24x36.pub 5 MB Download