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Is this damper compatible with 3-inch or 4-inch venting
Designed with 1-3/8 inch ODF suction and 7/8 inch ODF discharge brazed connections
the Schneider Electric MA-305 is the direct spec-for-spec replacement for the ADDB-1 and all MA-305-0-0-X variants
provided it is installed with the appropriate liquid-tight conduit or connectors and gaskets to prevent moisture ingress into the magnetic frame
Lennox 11U71 Pressure Switch 321894-706 Is this damper compatible withThe Lennox 11U71 High Altitude Pressure Switch is a critical safety component designed for furnace pressure switch replacement in systems operating at elevations between 4,500 and 7,500 feet. Calibrated with a precise 0. 85" WC (water column) actuation point, this OEM Lennox part ensures the inducer motor generates sufficient static pressure for safe combustion before allowing the gas valve to energize. This specific 104371 08 model is a SPST N. O.