Mat & mount sizes
See how the full artwork, visible window and outer board relate in common combinations.
| Artwork | Outer board | Window | Side / top border |
|---|---|---|---|
| 4 × 6 | 8 × 10 | 3.75 × 5.75 | 2.125 / 2.125 |
| 5 × 7 | 8 × 10 | 4.75 × 6.75 | 1.625 / 1.625 |
| 8 × 10 | 11 × 14 | 7.75 × 9.75 | 1.625 / 2.125 |
| 11 × 14 | 16 × 20 | 10.75 × 13.75 | 2.625 / 3.125 |
These are examples, not universal pairings.
The window is determined by your chosen overlap and what must stay visible. Borders may be equal, unequal or deliberately bottom-weighted. Signatures, decorative sheet edges and printed margins can change the desired window.
Mat in the US; mount in the UK
In these guides, both mean the window board around the artwork. Suppliers sometimes use “mount” for backing or a different presentation method, so check the actual component and measurement diagram instead of relying only on the word.
Order terminology matters: some suppliers ask for artwork size and deduct overlap automatically; others ask for the exact visible window. Confirm the convention before placing an order.
A visual size estimate. Verify the actual artwork, frame, mat, glazing, hardware, wall and manufacturer specifications before buying or arranging a display. Dimensions alone do not guarantee fit.