Where can you buy twin dimmer switch-model type bsy-740a for lamp model 22010?

You can purchase the twin dimmer switch model BSY-740A for lamp model 22010 from various online retailers such as Amazon, eBay, or specialty lighting stores. Additionally, check local electrical supply stores or home improvement centers like Home Depot or Lowe's, as they may carry compatible dimmer switches. Always verify compatibility with your specific lamp model before purchasing.