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Looking for an easy way to seal Class 1 flex duct? Shurtape DC 181 HVAC tape is your solution. With a cold weather acrylic adhesive that can withstand temperatures ranging from -10F to 210F, it's perfect for connecting, joining, and patching flexible air ductwork. This high-performance tape comes with clear UL Listing printing to ensure code compliance on every job, making it an excellent choice for professional HVAC technicians. The 1.75 inch x 120 yard roll is economically priced, so you can complete your projects without breaking the bank. Upgrade your ductwork sealing game with Shurtape DC 181 HVAC tape today!