Lincolnshire Three Bay
The Lincolnshire three bay pillbox is a variant form of the FW3/23. Essentially it is two of that type placed back to back and sharing an AAMG well to create a rectangular pillbox approximately 6.5m long and 2.5m wide with three fighting compartments. The two enclosed chambers each have three embrasures, one in each external wall. The AA well has the entrance to the pillbox which faces inland. This type of pillbox was generally used as part of the coastal crust and is found on the seawalls of Lincolnshire. In many cases they are now some distance inland as more farmland has been reclaimed from the sea.