Gauge flange for 3" hole
Material: Stainless steel
Function: Allows 2.5" gauge to mount into a 3" hole
Flange slips behind front lip of gauge and provides mounting hole pattern for 3" hole
Many older Bauer compressor frames have 3" holes in the front panel for the gauge mount. If your system has a 3" hole this flange provides the extra width needed for the mounting hole pattern.