Over 500 (white models) sold on ebay. Our team uses these on our own boats, 6+ years in the upper mid-west so far these are 100% PVC and SOLID! 

Large enough to easily move transducer to most optimum position without making additional holes in your boat! 

Protects Transom.

Allows mounting a 2nd transducer or additional accessories. 

ONE-INCH THICK! Get a nice deep screw into that board to keep your transducer in place (don't go gorilla) Nice and snug, that's it. 

Textured on back will hold marine adhesive. We use 3M 5200. 

Routed clean edges. Looks great! 

Best method is using a high quality marine adhesive, we like 3M 5200 on the backside, we also sell units with holes (consult your boat manufacturer transom specifications) with these units we suggest using adhesive, then caulking all the way around the board. We have boards pre-drilled with screws in a different listing. 

See my boat as example. (Pic is a 12” board allowing additional accessories ) We have 6.5”, 8”, 10" and 12” boards available. That transducer board is going into year six in a summer/winter climate and has not changed in any way structurely since installed. 

Ask any questions,

Thanks!