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This essential 3
Superior Filtration: 20-micron internal filtration media protects sensitive components from solid contaminants
specifically balanced to maintain high-static pressure across 1/2-inch motor shafts
designed to optimize cubic feet per minute (CFM) while maintaining low decibel levels during operation
making it an efficient choice for high-density zone applications
Lennox 31K74 Blower Shaft 321142-301 This essential 3The Lennox 31K74 Blower Shaft is a critical replacement component engineered for heavy duty rotation in residential and commercial air handlers. Measuring 18 inches in length with a 1 inch diameter, this shaft is manufactured from 1045 or C45 carbon steel to provide superior torsional strength and resistance to bowing under high torque loads. As a genuine OEM Lennox part, it ensures precise tolerance matching for blower wheel hubs and bearing