The Garmin GT15M-TH delivers mid-band CHIRP sonar in a bronze thru-hull package built for wooden fishing boats. Operating across 85–165 kHz, it produces sharp bottom definition, wide fish arches, and strong target separation down to 1,000 feet — making it a reliable choice for serious bottom fishing and structure work.

Specifications:

• Connector: 8-pin
• Sonar type: Mid-band CHIRP traditional sonar
• Frequency range: 85–165 kHz
• Power rating: 600 W
• Maximum depth: 1,000 feet
• Housing material: Bronze
• Mount type: Thru-hull
• Stem material: Bronze
• Ideal for: Wooden fishing boats

In the Box:

• GT15M-TH transducer
• Thru-hull mount
• Mounting hardware
• Documentation

⚠️ California Prop 65 Warning: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.