Thank you for your inquiry regarding this item from Prime-Line Products. Although its not guaranteed that we'll have your specific key number still in stock, you can try it... that might be the easier way to go. To do so, you'd have to visit your local Home Depot and request they special order model number E-2103, but with your specific key number (These E-2104 models are all keyed alike). What we'll have to do on our end for you is request for your key number to be searched through our actual inventory, and hope they can find it. Your second option would be to purchase our E-2402, which is a rekey kit that you could use both key cylinders to the same new key that would be provided within the rekey kit.
For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at email@example.com