Our premium Hammermill A3 28lb paper is sold per ream (500 sheets) and is packaged three reams per carton. Hammermill A3 28lb paper is designed for your color printing and copying needs. We double-box our A3 paper so that when you receive it the corners are undamaged and will run jam-free. Our A3 paper is undrilled; however, we can pre-drill your A3 paper with 4-holes. Just click on the drilling option.