AIREX PRO-SYSTEM KIT™ is a 2-in-1 system for combined air-tight sealing wall-mounted piping outlets and UV/Vapor Retarder insulation protection system for exterior HVAC refrigerant piping penetrations and outdoor insulation located at the point of service connections for outdoor equipment. The 2-In-1 System (Includes TITAN OUTLET™ and E-FLEX GUARD™) Offers improved sustainability, energy efficiency, and optimum performance of building wall, outdoor pipe insulation, and HVAC equipment. Due to the multi-dimensional complexities of recent building energy codes, building codes, green codes, mechanical codes, residential codes, and standards within this category, using AIREX PRO-SYSTEM KIT™ is the only guaranteed solution to meet all your quality needs and mandatory code requirements. AIREX PRO-SYSTEM KIT™ Wall Penetration Seal Outlet and Insulation Protection, Accessory Type: Wall Penetration Seal Outlet and Insulation Protection, For Use with: 5/8 and 7/8 in Tubing, 2-in-1 System, PVC, Gray Titan Outlet/Black E-Flex Guard, Domestic