BUENTYA 10Pcs White Picture Mounts, A3 Mount Picture Frame Mounts Acid Free Photo Mount Mat Board Square Photo Mounts Inside Aperture to fit for A4 picture Posters, Paintings, Photo Work

【High-quality Materials & Durable】：This photo frame mat is made of high-quality paper material, which has characteristics of environmentally friendly, not easily deformed, anti-aging, durable and tough.And this photo frame mat is also adopted a acid-free design,so that it is very safe to use, and will not produce any toxic or harmful substances to the human body 【Standard A3 Size & DIY Design Possible】：The outer size of this photo frame mat is 29.7*42cm/11.69*16.54Inch, and the inner size is 20.3*29cm/7.99*11.4Inch.The size is standard A3 size, which is very suitable for A4 size pictures.And the color is white, so that you can DIY a unique frame according to your own preferences or pictures 【Centered & 45° Cutting Design】：This photo frame mat is designed with two frames. The small frame is located in the middle of the big frame, which can display the picture content in the frame in the best way.In addition, the edge of the small frame is designed with a 45° bevel cut, which can make this photo frame mat perfectly fit the photo to avoid gaps,so that it can improve the beauty of the photo frame 【Easy to Install】：This photo frame mat is very convenient to use without any tools and skills.Just remove the back panel from the frame,then you can put the photo mat directly into the frame, or use tape to stick the picture on the photo frame mat to ensure that there is no gap between the picture and the photo frame ma.Finally, install the photo frame back panel 【Excellent Photo Frame Mat】：Using this kind of photo frame mat is not only can effectively block the exposure of uneven edges caused by plastic sealing, cutting or any other reasons,but also the smaller pictures or paintings can be perfectly fixed in the frame without falling off.It is an excellent photo frame mat