Sizing chart

 

  INCHES CM
12 x 16 12" x 16" 30.5 x 40.6
16 x 20 16" x 20" 40.6 x 50.8
20 x 28 20" x 28" 50.8 x 71.1
24 x 36 24" x 36" 60.9 x 91.4
28 x 40 28" x 40" 71.1 x 101.6