3 x 3" 3 x 4" 4 x 4" 4 x 5" 4 x 6" 5 x 5" 5 x 7" 6 x 6" 6 x 8" 8.5 x 11" 8 x 10" 8 x 12" 8 x 8" 10 x 10" 10 x 12" 10 x 15" 10 x 20" 11 x 14" 11 x 17" 12 x 12" 12 x 16" 12 x 18" 12 x 24" 16 x 16" 16 x 20" 16 x 24" 16 x 32" 18 x 18" 18 x 24" 20 x 20" 20 x 28" 20 x 30" 24 x 24" 24 x 30" 24 x 32" A1 (23.4 x 33.1") A2 (16.5 x 23.4") A3 (11.7 x 16.5") A4 (8.3 x 11.7") A5 (5.8 x 8.3")