K1666-3 - Lincoln Prism Direct Exhaust Fan 115V

Portable Fume Extraction for Industrial Environments

The Lincoln Electric Prism Direct Exhaust Fan (K1666-3) represents a premier solution for welding fume management in confined and air-restricted spaces. Often referred to by its legacy designation, the Mobiflex 100-NF, this unit is engineered to provide robust extraction capabilities without the bulk associated with traditional filtration systems. Designed for versatility, the Prism Direct Exhaust Fan is an essential tool for maintenance, repair, and fabrication operations where static ventilation is insufficient or impossible to install.

High-Performance Airflow Dynamics

At the core of the K1666-3 is a powerful 1 HP motor capable of generating significant suction. When equipped with the appropriate hose extensions, this unit delivers a maximum airflow of 765 CFM (Cubic Feet per Minute). This high-volume air movement ensures that hazardous welding fumes, particulate matter, and smoke are effectively removed from the welder's breathing zone, promoting a safer working environment and compliance with occupational safety standards. The system is designed to support extraction reaches of up to 32 feet (9.7 meters), allowing operators to position the fan at a safe distance while working deep inside tanks, vessels, or complex structures.

Ergonomic and Durable Design

Weighing in at only 40 pounds (approximately 18 kg), the Prism Direct Exhaust Fan is marketed as one of the lightest options in its class. Its construction features a sturdy, impact-resistant base and an integrated handle, facilitating easy transport across rugged job sites. The unit's compact footprint (24" H x 20" W x 20" L) allows it to fit into tight spaces where larger mobile extractors cannot go. Despite its power, the unit operates at a remarkably low noise level of 69 dB(A), reducing noise pollution in the workshop and allowing for clearer communication between team members.

Maintenance and Reliability

Lincoln Electric has designed the K1666-3 for longevity and ease of maintenance. The unit can be easily disassembled for cleaning, ensuring that airflow remains unobstructed over time. Backed by Lincoln Electric's 3-year warranty, this exhaust fan is a reliable investment for industries ranging from shipbuilding and automotive fabrication to general structural repair. It connects to standard 115V/120V single-phase power, making it compatible with common job site power sources.