Preway has been out of business for many years. We put one in a cottage in the early 80s. Your best bet is to custom fabricate a door. A glazier (window repair man) is likely to be able to use brass trim, hinges and tempered or quartz glass to make a custom door. Call around, you might be surprised. These guys do all kinds of custom work that most people are not even aware of. Call around and you will probably find one that will come out, take measurements and determine how door needs to be attached. If the fireplace is not worth the $150 to $200 that this is going to cost, don't bother.