and residential units

Is the 14004459-001/U different from the 14004459-001

Is the 257009 compatible with both natural gas and propane heaters

Flexible Installation: Foot mount design and color-coded leads (8" primary

Lennox 13W85 Blade R-407A and residential unitsThe Lennox 13W85 is a heavy duty, 26 inch condenser fan blade engineered for high static pressure applications in residential and light commercial HVAC units. This direct drive fan propeller features a 3 blade configuration with a 22 degree pitch, optimized for maximum CFM output while maintaining balanced, vibration free operation. As a genuine Lennox replacement part (cross referenced with 100060 17), it utilizes a 1 2 inch bore and is designed for