The Southwire Topaz Lighting 4" Square Extension Ring with 1" Raised Surface is designed for use with electrical boxes. This extension ring is constructed from high-quality materials, ensuring durability and long-lasting performance. The 1" raised design allows for easy installation of devices and fixtures, providing ample space for wiring. Ideal for both residential and commercial applications, this extension ring is compliant with industry standards, making it a reliable choice for electricians. Its square shape fits standard electrical boxes, ensuring a secure and professional finish.