The Sure-Vent 1-1/2 In. x 2 In. PVC Air Admittance Valve by Oatey is a high-quality product designed for indoor use. It features a self-sealing design and is compatible with PVC pipe material. The valve has a maximum pressure of 10 PSI and a maximum working temperature of 100°F, ensuring reliable performance. With a manufacturer warranty of 2 years, this valve is a durable and reliable choice for your heating, cooling, and air system needs.