This Quick Connect Mini-Split Line Set Extension is designed to seamlessly extend the line set length of your Quick Connect Mini-Split system without any hassle! With seamless installation and quick-connect mechanical connections, this line set extension is designed to save you time and ensure a reliable, leak-free connection.This kit includes a 15’ line set extension pre-charged with 75 grams of additional refrigerant and ¼” x 1/2” extension couplers, so you have everything you need to connect to another ¼” x 1/2” line set when you fall short on length. Please note that this line set extension cannot be used on its own and must be used with a standard 25’ or 15’ line set.Quick connect line sets contain the refrigerant that helps cool or heat your home, making them an essential part of your mini-split system. With a durable design made from copper and weather-resistant insulation, you can rest assured that your extended line set run will work reliably for years to come.Developed exclusively for Perfect Aire and Denali Aire Quick Connect Mini-Split systems, this line set extension is compatible only with our quick connect line sets and line set kits. Say goodbye to the hassle of traditional flared line sets and hello to a seamless, trouble-free installation with the Denali Aire Quick Connect Mini-Split Line Set Extension.