At Duststop Air Filters Inc., we want you to breathe easy. This means providing you with exceptional products that are focused on improving your health and keeping your house clean, while knowing you can count on us to address your air filtration needs.For over 30 years, Duststop Air Filters Inc. has been producing Canadian-made air filters for residential and commercial forced air furnaces. Founded by A.L. (Sandy) Kennedy in 1981, we have been serving markets across North America from our office located in Petrolia, Ontario. more... See more text