20 x 20 mm square comes in 1.2 mm (Batten thickness) and 2.0 mm (End cap) thickness., 40 x 40 mm square comes in 1.7 mm (Batten thickness) and 3.0 mm (End cap) thickness., 60 x 60 mm square comes in 1.2 mm (Batten thickness) and 4.0 mm (End cap) thickness., 75 x 75 mm square comes in 1.2/2.0 mm (Batten thickness) and 4.5 mm (End cap) thickness., 85 x 85 mm square comes in 1.3/2.3 mm (Batten thickness) and 5.0 mm (End cap) thickness., 100 x 100 mm square comes in 1.5/2.5 mm (Batten thickness) and 5.0 mm (End cap) thickness., 120 x 120 mm square comes in 1.2 mm (Batten thickness).