Hi Louise, Our Commercial Blowers are ETL certified. ETL/UL/CSA are typically interchangeable, and ETL should be acceptable to Canadian authorities. We are assuming this is a Canadian inquiry, as we typically only receive "CSA" inquiries from Canada. The differences in the certifications essentially boils down to which testing lab owns the trademark for the test name. Our Commercial Inflatables are tested to and comply with the NFPA701 requirement for flame propagation, and this is stated on the product label. Sincerely, Blast Zone Support