The Noritz 4" Appliance Adapter – VP4ADAPT1 is designed to connect Noritz tankless water heaters to 4" venting systems, ensuring efficient and secure exhaust venting. Made from durable, corrosion-resistant materials, it guarantees long-lasting performance and easy installation. Compatible with various Noritz venting components, it provides a reliable, leak-free connection for optimal system efficiency. Available at Apex Supply Company with in-store pickup, local delivery, or nationwide shipping.