The 4 in. Polypropylene Flex Vent Spacer from Rheem is designed for optimal venting solutions. This durable spacer is made from high-quality polypropylene, ensuring resistance to corrosion and high temperatures. It measures 4 inches in diameter, making it suitable for various venting applications. The product complies with industry standards, ensuring reliable performance in residential and commercial settings. Ideal for use with Rheem heating systems, this vent spacer facilitates proper airflow and enhances system efficiency. Item ships direct from manufacturer.