Garmin GT15M-THF Stainless Steel Thru-hull 20° Tilted Element Medium CHIRP transducer is built for midsize boats that demand precision, durability, and clean, reliable sonar performance. This flush-mount, through-hull design pairs rugged stainless steel housing with a 20° tilted element to deliver superior target separation and structure definition for near- and offshore fishing and cruising.
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Through-hull stainless steel housing: Durable, long-lasting construction designed to handle harsh saltwater environments and minimize drag with a flush-mount fit.
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CHIRP power: 600-watt midband CHIRP (85–165 kHz) for strong sensitivity and clear fish arches.
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20° Tilted element: 20° tilt optimizes target clarity and bottom returns for better bottom discrimination.
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Mounting style: Thru-hull flush mount for a clean profile and reduced drag over the hull.
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Beamwidth: 16–24° coverage delivers versatile performance from shallow to mid-depths.
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Depth capability: Up to 1,200 ft in saltwater and 1,900 ft in freshwater for broad water conditions.
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Hull material compatibility: Works with fiberglass, composite, steel, aluminum and wood hulls.
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Auto-identification / Plug-and-play: Plug-and-play operation with Garmin transducers for easy setup and integration.
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Design purpose: Reduced drag and optimized sonar performance on midsize fishing and cruising boats.
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What’s in the box: GT15M-THF 20 Deg Tilted Element, Jam Nut, Thread isolator, Hull Isolator, Documentation
This transducer delivers crisp arches and precise structure definition, enabling you to distinguish baitfish from larger targets with confidence. Its robust, flush-mount stainless steel housing minimizes drag while standing up to harsh saltwater environments, making it a reliable choice for near- and offshore outings. The combination of a high-definition 600-watt CHIRP, a 20° tilt, and flexible beamwidth provides clear, actionable sonar data across a wide range of depths and hull materials, with plug-and-play compatibility to streamline your Garmin setup.
