Upgrade your plumbing system with the durable PVC 4" x 3" Closet Flange Hub . Designed for maximum service temperature of 140°F, this closet flange hub ensures reliable performance in a variety of residential and commercial applications. Please note, do not test or use this product with compressed air or other gases for optimal safety. Trust in the quality of this closet flange hub for seamless installation and long-lasting functionality in your plumbing projects.