This heater is exclusively designed by West3D to fit edge to edge on build plates for the 180mm sized Salad Fork and Micron.
This heater is no slouch, at 300W this heats up quick, and the Lohmann adhesive is rated for long term use at high temperature.
The heater uses a NTC 100K Thermistor, and features both the heater and thermistor elevated from the bottom of the silicon pad to allow for traversing any obstacles that may present themselves. The heater and thermistor wire are long enough for any 180mm size build (by quite a bit!).