3" x 4" Long Outside-Fit Slip-Over Round Duct Coupling Sleeve, Galvanized Steel, for HVAC & Dryer Vent 2 Pack

Ventilation system running smoothly with this 3" x 4" Long Outside-Fit (Slip-Over) Round Duct Coupling Sleeve. Crafted from durable galvanized steel, this coupler is built to handle the demands of both HVAC systems and dryer vent applications. The slip-over design fits snugly over the outside of existing round ductwork, creating a tight, reliable connection that helps maintain proper airflow throughout your ventilation system. The galvanized steel construction offers excellent resistance to rust and corrosion, ensuring long-lasting performance even in humid or high-moisture environments. The 4-inch length provides ample overlap on both sides of the joint for a stable, secure fit. Whether you're repairing a broken duct section, extending an existing run, or completing a new installation, this coupler delivers a straightforward solution compatible with standard 3-inch round ductwork. No special tools are required for installation, making it a convenient choice for both homeowners and HVAC professionals. Each package includes 2 round duct coupling sleeves.

• 1. Perfect Size & Outside-Fit Design: Specifically designed as 3" diameter x 4" long, this round duct coupling sleeve features an outside-fit (slip-over) design that easily slides over 3" round ducts, hoses, or vents—no complicated measurements or modifications needed. It provides a snug, secure fit for seamless connection between duct sections, ideal for extending or repairing HVAC and dryer vent systems.
• 2. Heavy-Duty Galvanized Steel Construction: Crafted from high-quality galvanized steel, this duct coupler boasts exceptional durability, strength, and rust resistance. The galvanized coating protects against moisture, corrosion, and wear, making it suitable for both indoor and outdoor use, and ensuring long-lasting performance even in harsh ventilation environments
• Versatile Application: Multi-purpose design compatible with all standard 3" round ducts—perfect for HVAC systems (heating, ventilation, air conditioning), dryer vent ducts, bathroom exhaust fans, kitchen range hoods, and other ventilation setups. It serves as a reliable connector/coupler for extending ductwork, repairing broken sections, or joining two duct pieces securely
• Easy Installation (No Special Tools Needed): User-friendly slip-over design allows for quick, hassle-free installation—simply slide the sleeve over the ends of two 3" ducts and secure with steel clamps (not included) for a tight, leakproof connection. No glues, sealants, or professional tools required, making it ideal for DIY enthusiasts and professional contractors alike
• Leakproof & Efficient Performance: The precision-cut galvanized steel sleeve ensures a tight, gap-free fit that minimizes air leaks, maximizes airflow efficiency, and reduces energy waste. It effectively prevents air loss in HVAC systems and ensures proper ventilation for dryer vents, helping to maintain optimal system performance and improve indoor air quality