This transition coupler from US Coupler is expertly crafted to facilitate a seamless connection between polyethylene (HDPE) ducts and PVC pipes or fittings. Constructed from durable aluminum, it features a smooth exterior wall that enhances fitting performance and ensures a reliable seal with an air-tight rating up to 180 psi. Designed with a nominal duct size of 2.5 inches and constructed in accordance with SDR standards, it provides both strength and flexibility in various applications. Whether you're looking to upgrade your piping system or need a specific custom size, this adapter serves as an essential component for efficient drainage and water management solutions.