Part # Description GS241 Bottom Mount (RHT) 3000 PSI GS242 Bottom Mount (LHT) 3000 PSI GS243 Side Mount (RHT) 3000 PSI GS244 Side Mount (LHT) 3000 PSI 2” High Pressure gauge with red zone for gas order alert. For use with CO2 or other compressed gases. Not for oxygen service. 2” High Pressure CO2 Gauges Black Steel Case