Lambro 283 Worm Gear Duct Clamp, 3 In., Steel, Zinc

The Lambro 283 Worm Gear Duct Clamp is a heavy-duty fastener designed for secure connections in HVAC systems and ventilation applications. This 3-inch clamp is engineered to hold flexible aluminum ducts, pipes, and conduit firmly in place using a precision worm gear mechanism that delivers reliable, adjustable pressure without slippage.

The galvanized steel construction with zinc coating provides superior corrosion resistance, making this clamp ideal for both indoor and outdoor installations where moisture and humidity are present. Its durable, rust-proof finish ensures long-term performance and eliminates the need for frequent re-tightening, saving time and labor on residential and commercial projects alike.

Features and Benefits

• 3-Inch Duct Fit: Clamping range of 2-9/16 to 3-1/2 inches accommodates standard 3-inch duct and pipe applications with precise alignment.
• Worm Gear Mechanism: Smooth, self-locking worm gear allows easy hand-tightening and fine-tuned pressure adjustment for secure, leak-free connections.
• Galvanized Steel Construction: Zinc-coated finish delivers superior corrosion resistance, extending service life in humid and outdoor environments.
• Heavy-Duty Strength: Engineered to withstand high vibration and pressure in commercial ventilation, air-handling units, and industrial ductwork.
• Easy Installation: Simple hand-tighten design requires no special tools, reducing installation time and labor costs.
• Versatile Use: Perfect for joining flexible aluminum duct pieces, connecting HVAC components, and securing ventilation systems in both residential and commercial settings.

Specifications

• Brand: Lambro
• Model: 283
• Size: 3 inch duct
• Clamping Range: 2-9/16 to 3-1/2 inches
• Material: Steel
• Finish: Zinc (galvanized)