The J.W. Speaker Model 234 4 Inch Round Rubber Mounting Grommet is a practical and eco-friendly solution for securely mounting various devices. Designed to fit a 4 1/2 inch panel hole and with a maximum panel thickness of 1/4 inch, this rubber grommet ensures a snug and secure fit. Made with a durable rubber housing material, it is built to last. Sold individually and made in the U.S.A., this grommet is compatible with most J.W. Speaker 234 models, making it a versatile and reliable choice for your mounting needs.