Up for sale, a new old stock Airmar M260 in hull transducer with tank / mounting kit. This is the old style version with stainless steel lid. It has the standard Raymarine "DSM" style plug that is compatible with the following Raymarine 1kw sounders:

DSM250

DSM300

CP300

CP370

L1250

This is a complete set, only missing the fill plugs that thread into the two holes in the top of the stainless steel tank lid. Often times these get dropped into the bilge or otherwise lost anyway, grab a couple rubber plugs from the hardware aisle and you'll be all set. 

List price on a brand new one is over $1000, so you can save quite a bit of money going this route! This is one of, if not THE best transducer you can use with the above mentioned systems. If you have the space and the means to install it, you really can't go wrong. The sensitivity of the M260 is incredible!

Free USA shipping, $50 WORLDWIDE, plus any customs fees and VAT.