GMP Tools presents the Duct Seal 40 mm, an essential component for professionals engaged in cable placing and safety equipment. This reliable duct seal is designed to provide effective sealing for ducts, ensuring that cables are protected and safeguarded during installation. With its robust construction, it serves as a critical accessory for cable blowers and other related tools, making it a valuable addition to any contractor's toolkit. The Duct Seal is sold individually, offering a practical solution for various installation needs.