Scanstrut DS21B-P Vertical Cable Seal [DS21B-P] MRP They are optional on some

They are optional on some boats but should be as standard as power trim and tilt

All Holders come lined with a heavy duty white vinyl insert

20 write-on circuit labels included

Digital Antenna's dual band cellular antennas improve signals on cellular (824-894 MHz) and PCS (1850-1990 MHz) bands

Compact inverter/charger to power the comforts of home on your boat

Scanstrut DS21B-P Vertical Cable Seal [DS21B-P] MRP They are optional on someDS21B P Vertical Cable Seal Scanstrut premium IP68 waterproof cable seal provides easy fit cable routing that cuts down your installation time and is the only guaranteed and proven watertight installation for your antenna and navlight cables. Features: Watertight installation 100% waterproof with an IP68 rating Easy and reliable installation each unit supplied with both pre drilled and blank inner seals to make your installation as easy as possible.