Outer diameter: 30*40cm, Inner diameter: 25*35cm Package contents: When you purchase this magnetic photo frame set, you will get 2 self-adhesive magnetic frames (30x40cm) that allow you to flexibly display and quickly change documents, posters, information, advertisements, offers, certificates, room plans, ads, etc. High-quality materials: This magnetic wall photo frame is made of PVC plastic, and it is transparent, smooth and durable. You can easily adjust the display content even with a strong self-adhesive display frame. In addition, our self-adhesive magnetic frame is waterproof and can be used outdoors, so you don't have to worry about rainy days. Self-adhesive pad: If you buy our magnetic photo frame, your wall won't be damaged because no drilling is required. The sticker on the back makes it easy to attach this photo frame. Intended for clean, smooth and load-bearing surfaces such as windows, filing cabinets, doors, etc. Easy to use: No tools required. Simply remove the protective paper from the back of the magnetic frames, stick them to a flat surface, and insert a poster or photo. You can use them vertically or horizontally. Numerous uses: this magnetic holder is ideal for advertising new or special products, or for displaying opening hours in shops, restaurants, and supermarkets. It's also great for displaying photos and artwork on your refrigerator or cabinet. Office buildings, banks, hotels, and prominent businesses are also good choices.