Hello, all! I am looking to install a Fisher Insert in my existing masonry fireplace, but am having trouble finding the dimensions of the unit and the minimum required opening dimensions. The manual only gives the clearance to combustibles numbers. Can anyone help? I'm purchasing it this week, and if it doesn't fit my fireplace, it will be used in the shop, so at least I'll still get to use it at work. 😁 I can't put my hands on the measurements I took of my FP opening at the moment, but I know it will fit a Pacific Energy Super Insert LE, if that helps at all. (That was my high-efficiency dream stove, but the price I was quoted swiftly squelched that dream!) I grew up heating with wood in a Fisher Grandpa Bear, so I'm quite fond of Fishers. Thanks in advance.