Mueller Streamline Air Conditioner Line Set. It is a 35-foot refrigerant line set used for HVAC systems, featuring a 3/8-inch liquid line and a 3/4-inch suction line pre-insulated with a 3/4-inch polymeric, UV-resistant jacket.

Here are a few quick details about this specific line set:Specs: 3/8" (liquid) × 3/4" (suction) × 35 feet.Application: Designed for standard split-system air conditioning and heat pump installations.Design: Features Duraguard UV™ elastomeric insulation and comes nitrogen-charged and sealed for cleanliness