The size your own printer handles. Trim size, no bleed — you cut on the printed line, so bleed would only shift things. Same stack method as before: print one template (cut lines shown) for the top of the stack, and clean sheets (no lines) underneath.
Trim 4.25 × 13 in · PNG 1700 × 5200 px at 400 dpi · knob hole Ø1.4 in at (2.125, 1.6) in · four 3.5 × 2 in bays, tops 2.75 / 4.99 / 7.23 / 9.47 in. Print at 100% — fit-to-page OFF.