Hole cardboard size: (can also be processed and cut according to your size)

3.5*5 inches (cardboard outer diameter size: 8.9 * cm) actual display size of cardboard (5*8.8cm)

4*6 inches (cardboard outer diameter size: 10.1 * cm) actual display size of cardboard (6.5 * 11cm)

5*7 inches (cardboard outer diameter size: 12.7 * cm) actual display size of cardboard (8.7*12.5cm)

6*8 inches (cardboard outer diameter size: 15.2 * cm) actual display size of cardboard (9.2 * cm)

8*8 inches (cardboard outer diameter size: 20.2 * cm) actual display size of cardboard (16.2 * cm)

8*10 inches (cardboard outer diameter size: 20.3 * cm) actual display size of cardboard (14.2 * cm)

9*9 inch cardboard outer diameter size (22.8 * cm) cardboard actual display size (16.8 * cm)

7*12 inches (cardboard outer diameter size 17.8 * cm) actual display size of cardboard (11.8 * cm)

A4 (cardboard outer diameter size 21 * cm) cardboard actual display size (16 * cm)

16 inches (cardboard outer diameter size 30 * 40cm) cardboard actual display size (22 * 32cm)

A3 (cardboard outer diameter size 29.7 * 42cm) cardboard actual display size (21.7 * 34cm)

4K (cardboard outer diameter size 38 * 53cm) cardboard actual display size (28 * 43cm)

8K (cardboard outer diameter size 26.5 * 38cm) actual display size of cardboard (21.5 * 30cm)

Photo Frame board is the lining paper of the photo frame, which is an optional accessory of the photo frame, referred to as cardboard or photo frame lining cardboard.

It is generally not recommended to purchase a single piece or a small amount of large size cardboard because it is difficult to pack and easy to damage.

Specifications: 6-inch and above sizes are applicable (the box below 6-inch is small, not suitable for cardboard).

Use: after adding cardboard to the photo frame, photos of the size between 'plus cardboard display size' and 'photo frame available size' can be used.

Features:

1. After the photo frame is added with cardboard, it has three-dimensional sense, full of layers, and the overall effect is good;
2. The cardboard is alkaline, which can prevent the photo from changing color and keep the photo dry;
3. After the photo frame is added with cardboard, the photos placed are generally 2-4 inches smaller than those placed before the cardboard

4. Suitable for matching photo frames and photo walls

5. Customized cardboard cannot be returned or exchanged

6. All cardboard in the store is 1mm thick. 4K, 8K thickness 1.5mm

7. For customized cardboard, you need to contact online customer service!