Width x Height = square meters.We offer 10 optional mural size available :Size 1 ：140cm (W) x 70cm (H) (4'7''x 2'3'') ftSize 2 ：200cm (W) x 100cm (H) (6'6''x 3'3'') ftSize 3 ：200cm (W) x 150cm (H) (6'6''x 4'11'') ftSize 4 ：208cm (W) x 146cm (H) (6'9''x 4'9'') ftSize 5 ：200cm (W) x 200cm (H) (6'6''x 6'6'') ftSize 6 ：250cm (W) x 175cm (H) (8'2''x5'8'') ftSize 7 ：250cm (W) x 200cm (H) (8'2''x6'6'') ftSize 8 ：300cm (W) x 200cm (H) (9'10''x 6'6'') ftSize 9 ：350cm (W) x 256cm (H) (11'5''x 8'4'') ftSize 10 ：400cm (W) x 280cm (H) (13'2''x 9'2'') ftOther size . (width and height) . please tell us.Installation Notes：-The walls must be clean, smooth and flat.-The individual wallpaper pages are numbered, and you can cut them separately to avoid confusion about the order of the paper.Tips:- Due to the difference between the monitor and the light source, the color will be slightly different. There may be slight chromatic aberration. Of course, the chromatic aberration is very small, acceptable and normal.- Please measure the wall correctly and make sure to choose the correct size. No matter what size you order, you will get a full HD picture. If you do not have the size you need, or if you need a full house wallpaper, please contact us, we can custom any size.Note：Murals are customized products.If there are quality problems in product transportation, we will provide you with free new products or a full refund after review!If it is a complete product, you do not want to use it after delivery, and you want a refund, you need to pay additional shipping costs. Hope you can understand!