Size of polyurethane (PU) polishing pad : 

Dimensions include  23 x 55 inches (584.2 x 1397 mm),  36 x 71 inches (914 x 1803 mm), 42 x 42 inches (1066 x 1066 mm), 52 x 52 inches (1320 x 1320 mm).

φ26 inches (660 mm), φ32 inches (812 mm), φ38 inches (965 mm), φ52 inches (1320 mm). 

Custom sizes, shapes and configurations are available.

Thickness for polyurethane polishing pad: 

Standard thickness for PU polishing pads ranges from 0.020 inches (0.508 mm) to 0.20 inch (5.08 mm).