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Amazon.com: BTMETER Manometer Gas Pressure Meter, Dual Port Manometro Pressure Differential Gauge Check Air Flow Pressure for HVAC Gas Furnace, Digital Manometer w/Backlight 12 Measure Units QX-1201 : Industrial & Scientific
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1-100932-01 Sensirion | Sensirion SFM3000 Series Low Pressure Drop Flow Meter for Gas, -200 slm Min, 200 slm Max | 123-7149 | RS Components
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