Our product has a standard a4 size of 21.0 x 29.7 cm inside. it is suitable for all products in a4 size. the product is sent in a specially produced box according to the dimensions of the frame. it does not require any installation. you can take it out of the box and start using it. our frame can be opened and closed thanks to the flexible nails on the back. in this way, you can place the content you want in the frame very simply. it is suitable for both vertical and horizontal use, thanks to the 2 hanging brackets on the back of the frame. in addition, it can be used both vertically and horizontally on the table, thanks to the apparatus that is sent with our product and can be attached and removed from the back. since our product is glass, it shows the images very clearly. the frame used in the product is made of 1st quality material and is extremely durable and can be used for a long time. thank you for choosing us. i wish you to use it in good times... maximum 9 pieces of this product can be ordered. swordslife reserves the right to cancel orders over 9 units. more than 100 stocks are offered to be sold at the campaign price. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.