The "LH" designation identifies this as the low/high dual-frequency variant of the B265 family, giving CHIRP performance across two frequency bands from a single transducer body rather than requiring two separate units. Bronze is Airmar's standard housing material for thru-hull transducers on fibreglass and wood hulls (a stainless-steel housing, as used elsewhere in Garmin's Airmar range, is the correct choice instead for metal-hulled boats to avoid galvanic corrosion). At 1kW of transmit power, this transducer is built for genuine depth capability well beyond typical inshore fishing, making it suited to offshore and deep-water anglers running a compatible Garmin sonar module. The B265 family sits above the smaller B175 in Airmar's thru-hull range, generally chosen for slightly larger hulls or where a wider element footprint is wanted for marginally improved sensitivity at the same 1kW power rating.