The SOX Lamp Socket is designed specifically for low-pressure sodium (SOX) lamps with a BY22d base, providing a secure mechanical fit and reliable electrical connection for safe, consistent operation.Constructed from durable, heat-resistant materials, this socket is ideal for laboratory equipment, optical testing systems, specialty lighting installations, and replacement projects. Its precision-fit design securely holds the lamp in place while allowing for straightforward installation and maintenance.Whether you're replacing an existing socket or building a complete SOX lighting system, this lamp holder delivers the dependable connection required for proper lamp performance and long-term reliability.Assembly is quick and easy — see it come together in the product video above.Compatible with SOX lamps that use a BY22d base, including common 18W, 35W, 55W, 90W models as well as 26w, 36w, 66w, 91w, 135w, 180w . A compatible SOX ballast is required for operation.