Sizes: 

4" x 6"

For 4 in x 6 in Photo
Dimensions: 5 in x 7 in
12.7 cm x 17.78 cm

5" x 7"

For 5 in x 7 in Photo
Dimensions: 6 in x 8 in
15.24 cm x 20.32 cm

8" x 10"

For 8 in x 10 in Photo
Dimensions: 9.5 in x 11.5 in
24.13 cm x 29.21 cm