12 x 12 (1/2" x 1/2")16 x 16 (5/8" x 5/8")19 x 19 (3/4" x 3/4")25 x 25 (1" x 1")32 x 32 (1-1/4" x 1-1/4")38 x 38 (1-1/2" x 1-1/2")50 x 50 (2" x 2")65 x 65 (2-1/2" x 2-1/2")75 x 75 (3" x 3")90 x 90 (3-1/2" x 3-1/2")100 x 100 (4" x 4")125 x 125 (5" x 5")150 x 150 (6" x 6")