Humminbird Scupper Transducer for Ocean Kayak
 

I have a used XTH 9 20 P. Used it for a couple of seasons, then sat in the garage for a couple of years. Don't have the fishfinder for it anymore, so this needs to go.
Fits flush in the scupper of Ocean kayaks equipped with this option. I'm not sure I have the big spacer shown in the pic, but you don't want/need this for your kayak install.

Info:
The Humminbird Transducer for Ocean Kayak Fishing Kayaks XTH 9 20 P is plastic thru-hull transducer that fits the specially made groove in the bottom of most models of Ocean Kayak fishing kayaks. Single/Dual Beam, 20/60 degree, 200/83 kHz. Not compatible with the Trident Ultra, as the Ultra requires the transom mount transducer and Ultra Transducer Kit.

Sells for new for $100.
I'll sell mine for $45 shipped in contig US.

Updated pics.