Square/Flat Rail applications fit rails up to 4-1/8" high by any depth This all 18-8 stainless steel mount extends your grill or filet table 8" in-board or outboard and attaches to square or flat rails up to 4-1/8" (104 mm) high by any depth.  Mount can also attach to any flat vertical surface such as bulkheads, gunnels, transoms, or cabin sides. Rod portion of mount quickly disconnects for easy storage. Some fasteners required for installation. Fasteners for attaching this mount to any Magma Rectangular Grill or Dual Mount (DM) Filet Table/Cleaning Station are included with those products Some additional fasteners required for complete installations Grill and table sold separately