Have you ever run into a f i r e p l a c e opening that is too big for a s t a n d a r d mantel? I've found a way to solve this problem and save money in the process. The local lumberyard has a whole rack of "standard" moldings. With a little imagination and planning you can arrive at a better mantel than the stock ones, and save money at the same time. First you need an idea of the style mantel you want. I suggest you first look at a catalog of standard mantels. Morgan Products (601 Oregon St., Oshkosh, WI 54901), for example, has about six to choose from that come in various sizes. The mantel