Trane SWT1612 Limit Switch This is an interchangeable hub

This is an interchangeable hub style blade

OEM Precision: Guaranteed Trane SLG0123 specifications maintain the balance and resonance profiles of the original equipment

it provides both options

What is the primary benefit of the 5/16" diameter over smaller rods

This part is rated for standard residential 120V ignition systems and features a precision-formed rod for optimal placement within the flame envelope

Trane SWT1612 Limit Switch This is an interchangeable hubThe Trane SWT1612 Limit Switch is a critical safety component designed for heavy duty thermal regulation in high efficiency furnace applications. This OEM Trane replacement part features a precise 160 190F temperature profile, engineered to open the electrical circuit at 190F to prevent heat exchanger damage and automatically reset (close) once the plenum temperature cools to 160F. Built with a 3 inch insert probe, this switch ensures accurate sensing