Outer diameter: 30*40 cm, inner diameter: 25*35 cm Package contents: When you purchase this magnetic photo frame, you will receive 2 self-adhesive magnetic frames (30 x 40 cm) that allow you to flexibly display and quickly change documents, posters, information, advertisements, offers, certificates, room plans, announcements, etc. High-quality materials: This wall-mounted magnetic photo frame is made of PVC plastic and 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 backing: When you purchase our magnetic photo frame, your wall will not be damaged because drilling is not 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, attach them to a flat surface, and place a poster or photo inside. You can use it both vertically and horizontally. Many uses: this magnetic holder is ideal for advertising new or special products, or for opening hours in shops, restaurants, and supermarkets. It is also excellent for displaying photos and artwork on your refrigerator or cabinet. Office buildings, banks, hotels, and leading companies are also good choices.