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The MUELLER STREAMLINE LS-MS583850P is a pre-paired mini-split line set designed for ductless HVAC installations requiring a 50-foot run. The set includes a 5/8-inch suction line with factory-applied 1/2-inch insulation and a 3/8-inch liquid line, both cut to 50 feet. Both lines arrive factory flared on each end with flare nuts included, reducing field prep time on the job site. This contractor pack format is intended for shops and technicians stocking material for repeat ductless work, providing consistent sizing and insulation thickness across multiple installs.
This line set is suited for higher-capacity single-zone ductless systems where a 5/8-inch suction line is specified. It is appropriate for residential and light-commercial applications. HVAC technicians handling standard split-system refrigerant line installations are the primary installers. Before pulling the set to a job, verify that the total run length, elevation change between the indoor and outdoor units, and any local line set length restrictions are within the equipment manufacturer's specifications.
Designed as an OEM-style replacement or new-installation line set for higher-capacity single-zone ductless mini-split systems that specify a 5/8-inch suction line and 3/8-inch liquid line pairing.
Installation should be performed by a licensed HVAC technician. Shut down and isolate the mini-split system before connecting or disconnecting refrigerant lines. Verify proper flare seating before torquing flare nuts to avoid leaks at fittings. Confirm total run length, vertical elevation change, and any refrigerant line length restrictions listed in the equipment manufacturer's installation manual prior to final connection.
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