Product details

Description and Specifications

GT15M-THF 20 Degree 600W SS Thru-Hull Transducer

Designed for reduced drag and optimum sonar performance on midsize fishing and cruising boats, this flush-mounted, 600-watt mid-band CHIRP transducer clearly defines fish arches, structure, and bottom depth returns on the display.

Midband Chirp Traditional Sonar

This 8-pin, 600-watt stainless steel thru-hull transducer features high-definition mid-band CHIRP sonar that clearly defines fish targets and structures down to 1,200’ in saltwater and 1,900’ in freshwater.

Broad Frequency Range

Use the perfect frequency for the waters being fished. Covering the medium frequency range, this transducer pulses from 85–165 kHz, displaying a wide coverage area, crisp fish arches, and accurate depth readings.

Optimum Ping Sensitivity

Offering excellent sonar sensitivity, low noise, high resolution, and good separation of targets, this robust transducer makes it easier than ever to distinguish fish and structure on a compatible chartplotter display.

Thru-Hull Installation

A durable stainless steel housing and stem offer straightforward thru-hull flush mounting for minimum drag and optimum beam orientation for clear sonar returns.

Auto-ID Technology

Enjoy simple plug-and-play operation with Garmin auto-identification technology — which enables the sonar to configure itself to the transducer being used automatically.

Fits Various Hull Types

Configurable for various boat hull materials, including fiberglass, composite, steel, aluminum, and wood, the transducer is available in a range of tilt versions to accommodate deadrise angles of 0–20 degrees without a fairing block.

Specifications:

  • Transducer Frequency: Medium band chirp (85-165 Khz)
  • Transducer Power: 600 W
  • Transducer Beam Width: 24-16 degrees
  • Transducer Maximum Depth: 1200 Ft Saltwater; 1900 Ft Freshwater
  • Transducer Cable Length: 50 ft.
  • Transducer Depth/Speed/Temperature: Depth, temperature
  • Transducer Number of Pins: 8-Pin
  • Transducer Supported Deadrise/Transom Angles: 20 degrees support hull deadrise angles from 16 degrees to 24 degrees
  • Housing Material: Stainless steel

In the Box:

  • GT15M-THF transducer
  • Jam nut
  • Washer
  • Thread isolator
  • Hull isolator
  • Documentation

Specifications:

  • Cable Length (Feet): 50'
  • Mounting Style: Thru-Hull
  • Temperature: Yes
  • Box Dimensions: 7"H x 7"W x 11"L WT: 7.2 lbs
  • UPC: 753759319946
Shipping, Warranty & Returns

Shipping: "In-stock items ordered by 4:00 PM EST ship the same day. High-value marine electronics are shipped insured and may require signature confirmation."

Warranty: "Salina Vita is an Authorized Dealer. Your purchase includes full manufacturer warranty support. Proof of purchase is retained for your records, and any warranty service is handled directly through the manufacturer."

Returns: "Eligible uninstalled merchandise in its original, factory-sealed packaging may be returned within 30 days of receipt. All returns require an RMA number and may be subject to a restocking fee of up to 15%. Electronics that have been installed or powered on are non-returnable."

Compatibility & Fitment

Marine electronics are highly vessel-specific. If you are unsure if this integrates with your current helm, please contact our concierge team for a fitment review prior to ordering.

FAQs

Please read our FAQs page to find out more.

When will my order ship?

For in-stock items, orders placed by 4:00 PM EST are eligible to ship the same day. If any item in the order is not currently in stock, shipment timing will depend on availability.

What is your return window?

Eligible merchandise may be returned within 30 days from the date of receipt. All returns require a Return Merchandise Authorization (RMA) number before anything is sent back. For the smoothest experience, we ask customers to contact Salina Vita first so we can coordinate the request properly. Returned merchandise must be complete, in its original packaging, and in resalable condition. Items that arrive incomplete, improperly packed, or not suitable for resale may not qualify for return approval.

Are restocking fees possible?

Yes. Approved returns may be subject to a restocking fee of up to 15%. Non-stock items may not be returned. In addition, opened or unsealed DVDs, CDs, and cartography products are non-returnable unless defective. If the product falls into CWR’s excluded media categories—such as opened or unsealed cartography, DVDs, or CDs—it is not returnable unless defective.

If my unit needs warranty service, should I send it back to Salina Vita?

No. Units requiring service, whether under warranty or otherwise, should be returned directly to the appropriate manufacturer, not to Salina Vita. We are always happy to help guide you to the correct manufacturer support path. Absolutely. While the service destination is the manufacturer, we can help you identify the proper support channel and make the process feel more straightforward and well-managed. Units that require service themselves, however, should go directly to the manufacturer under CWR’s policy.

I still have more Questions, can we contact you?

At Salina Vita, we believe premium marine commerce should feel measured, transparent, and reassuring. If you have a question about a shipment, return eligibility, or manufacturer service, contact us before taking the next step and we will guide you with the discretion and clarity your vessel deserves.

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