This Topoge handhole gasket is designed to fit a 3-1/4" x 4-1/2" x 1/2" E opening. It is made by the reputable brand Topoge and is a reliable choice for industrial applications. The gasket is made of high-quality materials to ensure durability and long-lasting performance. The gasket is suitable for use in various industries, including business and industrial settings. It is easy to install and provides a tight seal, ensuring that your equipment operates smoothly and efficiently. With this Topoge handhole gasket, you can be confident in the quality of your equipment and avoid any unnecessary downtime.