Lambro Industries 283 Galvanized Worm Gear Clamp 3 in 50pk

Product Description

The LAMBRO INDUSTRIES 283 is a 3-inch galvanized worm gear clamp designed to secure flexible duct, hose, or tubing connections in HVAC, ventilation, and related mechanical systems. The worm gear drive mechanism allows precise tightening across a consistent clamping range, delivering a secure, leak-resistant seal at duct joints and transitions. The galvanized finish provides corrosion resistance in both indoor and light-duty exposed installations. This clamp is a standard fastening component installed by HVAC technicians, sheet metal workers, and mechanical contractors during new construction and service work.

This clamp is well suited for residential and light commercial HVAC and ventilation applications where flexible duct collars, exhaust connectors, or tubing transitions require a reliable mechanical seal. It is commonly used at air handler connections, dryer vent transitions, bathroom exhaust fan outlets, and other 3-inch duct or hose terminations. The package quantity of 50 units per pack makes it practical for stocking in service vehicles or shop inventory for ongoing installation and maintenance work.

Key Features

• 3-inch nominal size fits standard 3-inch flexible duct and hose connections
• Galvanized steel construction resists corrosion in typical mechanical system environments
• Worm gear drive allows controlled, even tightening for a secure seal
• Sold in a 50-unit pack suitable for stocking and bulk installation use
• Compatible with standard flexible duct collars, exhaust tubing, and hose fittings

Compatibility

Designed as an OEM-style replacement and standard-use clamp for 3-inch flexible duct, exhaust hose, and tubing connections in residential and light commercial HVAC and ventilation systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or mechanical contractor. Power down or de-energize associated equipment before making duct or hose connections. Use an appropriate nut driver or flat-blade screwdriver to drive the worm gear to proper tightness without overtightening, which can deform flexible duct collars. Follow applicable local mechanical codes and manufacturer duct installation guidelines.

Technical Specifications

• Nominal Clamp Size: 3 inches
• Finish: Galvanized
• Package Quantity: 50 per pack
• Unit of Measure: EA
• Package Weight: 4.5 pounds

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 283