Lennox X8407 – Cerroset 610805008139, 3/8" L x 5/8" S x 50' Insulated Lineset with flare nuts is designed for ductless and mini-split air conditioning systems that require reliable, pre-insulated copper tubing. This high-quality lineset provides efficient refrigerant flow, durable insulation, and easy installation for residential or light commercial applications. Suitable for R410A and other modern refrigerants, it helps maintain system performance while reducing energy loss.

This Cerroset lineset includes pre-attached flare fittings and a protective black insulation jacket for long-term outdoor durability. Ideal for installers looking for consistent Lennox-approved quality and smooth field installation.

 

Product Features:

• Compatible with ductless and mini-split heat pump and A/C systems
• Pre-insulated copper liquid and suction lines (3/8" liquid x 5/8" suction)
• 50-foot length for flexible installation routing
• Includes factory-installed flare nuts for quick, reliable connections
• UV-resistant black insulation designed for outdoor exposure
• Suitable for R410A and R22 refrigerants
• Reduces heat loss and helps maintain system efficiency

 

Specifications:

Brand: Lennox
Part Number: X8407
Manufacturer Reference: Cerroset 610805008139
Liquid Line Size: 3/8 inch
Suction Line Size: 5/8 inch
Length: 50 feet
Insulation: Pre-insulated, black, UV-resistant
Fittings: Flare nut on both liquid and suction lines
Application: Ductless and mini-split A/C or heat pump systems
Refrigerant Compatibility: R410A, R22