  
   Size
   Without Frame
   Art Box
   Oak Frame
  
    S
    47 x 27
    48 x 28
    50 x 30

    M
    59 x 34
    60 x 35
    62 x 37
  
    L
    77 x 44
    78 x 45
    80 x 47
  
    XL
    91 x 52
    92 x 53
    94 x 55

All dimensions are in centimetres