Well, I have/had committed to buying the Buck Model 18. It fits perfect. I've made plans to go pick it up tomorrow. Well, tonight I came across a slighty used Country Stove Performer C210, asking $875, no blower. If they won't move on the price I'm still committed to the 18 because the blower is $300 from lennox. I had a new unit priced to me for just over $1500. A lot more stove than the Model 18, and will barely fit my dimensions. The issue is the depth of the flue opening from the front of the opening, it's only 4.5 inches. That puts the flue opening about half under the chimney opening and half under the top of the prefab unit. I have about 2.5 inches from the top of the flue to the top of the prefab unit. I'm pretty sure not offset box will fit that, but I might be wrong. Question is if SS flex liner is flexible enough to make that connection? The people with the used QuadraFire 2700I never emailed me back, apparently they didn't take me serious sense I was over 6 hours away...