Dimensions: brick mirror is sent as 1 piece of 5cm x 20cm.15 pieces. its dimensions are shown in the 2nd image. our product is 1mm plexiglass with a mirror-like appearance, it is definitely not a glass mirror. the product is suitable for decorative use. you can apply it to the surface without drilling the walls, without using nails, by removing the double-sided tape on the back. mounting locations: smooth walls, ceiling, any flat floor, living room, children's bedroom, dining room, kitchen, office, bathroom, furniture surface or other places. package contents: 15 pcs plexi decorative brick mirror (size 5x20cm) remove and paste the double-sided transparent tape on the back, then remove the protection film on the front surface. the product is used for plexi mirror and decorative purposes. it is not a real glass mirror. remove the gelatin. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.