Check the listing for details. SIGMA OUTLET BOX EXTENSION # 14223. Condition: New. Listed at 14.25 USD. This Sigma outlet box extension is the perfect solution for those who need to add an extra outlet to their existing electrical setup. Designed for use in a variety of settings, this high-quality electrical equipment is sure to meet your needs. With its durable construction and reliable performance, you can be confident that this outlet box extension will provide you with long-lasting use. Whether you're a business owner or an industrial professional, this Sigma outlet box extension is a must-have for your electrical equipment. It is compatible with a wide range of electrical plugs, outlets, and covers, making it easy to create a custom electrical setup that meets your needs. So why wait? Order yours today and start enjoying the convenience of an extra outlet in your workplace!