Most framing mistakes come from mixing up measurements. Before you order, especially in bulk, check which of these three you're giving.
1. Picture size
This is the size of the photo, print or certificate itself. Measure the width and height in millimetres, edge to edge.
2. Frame opening
This is the visible window inside the frame. Without a mount, the opening is usually a few millimetres smaller than the picture, so the edges sit under the frame's lip and stay hidden.
3. Outside size
This is the full size of the finished frame, including the moulding. It matters when you're filling a specific wall space or display system. A wider moulding makes the outside size larger for the same picture.
Where a mount fits in
A mount is a card border between the picture and the frame. With a mount, the frame is sized to the mount's outer edge, such as an A3 frame. The mount window is cut slightly smaller than the picture, such as an A4 print.
Common UK sizes
| Name | Millimetres |
|---|---|
| A5 | 148 × 210 |
| A4 | 210 × 297 |
| A3 | 297 × 420 |
| A2 | 420 × 594 |
| 7 × 5 in | 127 × 178 |
| 8 × 10 in | 203 × 254 |
| 12 × 16 in | 305 × 406 |
Ordering from YTK
When you request a quotation, tell us whether your measurements refer to the picture, frame opening or outside of the frame, and give your quantities and delivery postcode. We confirm the selected designs, measurements, availability and full quotation before manufacturing begins.
