Professional-grade 3.1 mil silver polypropylene duct tape with UL181B-FX certification, extreme temperature resistance (-40°F to 185°F), and aggressive acrylic adhesive for sealing flexible HVAC ducts and connector systems in commercial construction.
3M™ Metallized Flexible Duct Tape 3350 is a professional-grade 3.1 mil thick silver polypropylene tape engineered for sealing and repairing flexible HVAC ducts and connector systems in residential and commercial construction applications. This industrial-strength tape features a 1.6 mil UL printed polypropylene foil backing combined with a powerful pressure-sensitive cold weather acrylic adhesive, delivering exceptional performance across extreme temperature ranges from -40°F (-40°C) to 185°F (85°C). The tape is specifically formulated to resist flame, moisture, UV degradation, and chemical attack, making it ideal for demanding jobsite conditions.
Designed for professional contractors and industrial users, this duct tape meets the rigorous requirements of UL181B-FX standards, ensuring compliance with building codes and safety regulations. Each roll measures 48mm x 109.6m (1.88 inches x 119.9 yards) and boasts an impressive tensile strength of 32 lbs (56 N/cm) with 213% elongation at break, providing superior durability and flexibility for challenging installations. The hand-tearable design allows for easy, tool-free application directly from the roll, while the aggressive acrylic adhesive ensures long-term adhesion even in cold weather conditions.
With 12 rolls per case, this product is perfect for bulk purchasing by commercial contractors, HVAC specialists, and maintenance professionals. The metallized silver finish not only provides an attractive appearance but also contributes to the tape's reflective properties. Whether sealing flexible air ducts, repairing air connectors, or protecting insulation systems, 3M™ Metallized Flexible Duct Tape 3350 delivers the reliability and performance that professionals trust for mission-critical applications.
Key Features
- UL181B-FX certified for residential and commercial HVAC duct applications
- Extreme temperature range: -40°F to 185°F (-40°C to 85°C) with cold weather acrylic adhesive
- Flame, moisture, UV, and chemical resistant for demanding jobsite conditions
- Hand-tearable design for tool-free, easy application directly from roll
- High tensile strength (32 lbs/56 N/cm) with 213% elongation at break for superior durability
- 1.6 mil UL printed polypropylene foil backing provides structural integrity
- Aggressive pressure-sensitive adhesive ensures long-term adhesion even in cold weather
- Metallized silver finish with reflective properties for professional appearance
Technical Specifications
| Specification |
Value |
| Product Number | 3350 |
| UPC Code | 00051111078174 |
| 3M ID | 7010334739 |
| Brand | 3M™ |
| Product Type | Metallized Flexible Duct Tape |
| Color | Silver |
| Total Thickness | 3.1 mil (0.079 mm) |
| Backing Material | Polypropylene with 1.6 mil UL printed foil |
| Backing Thickness | 1.6 mil (0.04 mm) |
| Adhesive Type | Pressure-sensitive cold weather acrylic |
| Width | 48 mm (1.88 inches) |
| Length per Roll | 109.6 m (119.9 yards) |
| Tensile Strength | 32 lbs (56 N/cm) |
| Elongation at Break | 213% |
| Minimum Operating Temperature | -40°F (-40°C) / -30°F (-34°C) |
| Maximum Operating Temperature | 185°F (85°C) / 230°F (110°C) |
| Units per Case | 12 rolls |
| Certification Standard | UL181B-FX |
| Primary Application | Sealing flexible HVAC ducts and air connectors |
| Industries Served | Automotive, Construction, Electronics, General Industrial, MRO, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| Use Classification | Industrial/Occupational use only - Not for consumer sale |
| Key Features | Hand-tearable, flame resistant, moisture resistant, UV resistant, chemical resistant |
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