18" Modular Mount Vertical 8" Round Base Plate - Top Plate RequiredThis Seaview Modular Mount works with most satellite domes. The modular design allows you to add various accessories and different top plates at any point. Thus making it a cost effective choice. Specifically designed to not take up a large amount of space results in the perfect solution where space saving is a must. Oval hollow mast section allows for easy cable management.Modular Top PlateA Seaview Modular Top Plate is required to mount a radar, satellite dome, camera or search light, and is sold separately.Modular DesignThe modular design allows the user to not have to replace the entire mount when a different radar or satdome is used. Instead the user can just replace the top plate.