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The 3M COMPANY 1230-A is a professional-grade, multi-purpose duct tape designed for light industrial and HVAC applications. The tape measures 2 inches wide by 30 yards long and features a durable, waterproof backing that tears easily by hand for fast, clean cuts on the job. It applies smoothly to irregular and curved surfaces, maintaining a firm hold without lifting or flagging. Licensed HVAC technicians and light industrial tradespeople rely on this tape for sealing, bundling, and temporary repairs where a strong, moisture-resistant bond is required. It meets UL 723 standards and conforms to HUD Boca codes.
This tape is suited for residential and light commercial HVAC installations, ductwork sealing, and general-purpose repair tasks in light industrial settings. Its waterproof backing performs in environments where moisture exposure is a concern, such as mechanical rooms, crawlspaces, and utility areas. The smooth application and firm adhesion on curved surfaces make it practical for wrapping duct joints, pipe bundling, and other field repairs where a reliable, code-compliant tape is needed.
Designed as a professional-grade duct tape for light industrial HVAC applications including ductwork sealing, bundling, and general mechanical repairs where UL 723 and HUD Boca code compliance is required.
Surface preparation is critical for adhesion — clean and dry the substrate before applying the tape. Power down or shut off airflow to duct sections before taping to ensure proper contact and seal. This product is intended for light industrial and HVAC use and should not be substituted for listed duct sealant or mastic in applications requiring an airtight, permanent seal per SMACNA or local mechanical codes.
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