The Slimduct 3.75" 90 Degree Vertical Elbow is the ultimate solution for seamlessly changing the direction of your lineset with unparalleled flexibility during installation. Crafted to meet the highest standards of durability, these vertical elbows are designed to add convenience and aesthetic appeal to both residential and commercial buildings. It is constructed from weather-resistant PVC, ensuring longevity and resistance against the harmful effects of prolonged sun exposure.