This manual shows duct cleaning contractors how to identify the different types of insulated air ducts, how to open each type for access by cleaning equipment and personnel, how to close and seal openings after cleaning. Includes guidelines on determining when insulated ducts need to be cleaned, how to avoid damaging fibrous glass surfaces. Pre- and post-cleaning checklists are included. A helpful tool for the professional duct cleaning contractor.
40-page Brochure
Pub. No. AH122
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