Use 1:With mat: Front opening 3.8x3.8 in with mat,Suitable for photos 4x4 in. Use 2: Without mat:Front opening 4.7x4.7 in without mat, Suitable for photos 5x5 in, Rear opening 5x5 in. Thickness 0.67in.
Use 1:With mat: Front opening 3.8x3.8 in with mat,Suitable for photos 4x4 in. Use 2: Without mat:Front opening 4.7x4.7 in without mat, Suitable for photos 5x5 in, Rear opening 5x5 in. Thickness 0.67in.