Bonded pads and rolls are constructed from the same uniform polypropylene fibers as the meltblown sorbents, but in addition are sonically bonded together for added strength and reduced lint. Ideal for spill clean up, under leaking equipment, areas where there is overspray, leaks and drips. Perforated for easy and exact use, helps you use less and save money. Pads are perforated vertically at 7.5". 38" rolls are perforated every 9.5" horizontally and 17" vertically. 30" rolls are perforated every 7.5" horizontally and 18" vertically. Pads are also available in size 16" x 20".