I did that exactly, ellessebee. I have the 240V OTR Advantium mounted above the counter. I also have 15" wall cabinets so it fits and works like a charm. I don't think there are any differences in the cooking features between the wall oven and OTR models. The oven cavity is pretty big, because I can fit a half sheet. There are two considerations you need to keep in mind. 1. The OTR does need to vent, because it performs a cooling function after using the non-MW functions. I have mine blow out the front, above the door. In hindsight, I would have run some duct up and over to the adjacent rangehood. 2. The door needs and extra inch of clearance on the hinge side (left) to open. When the contractor first installed it, the whole unit was flush with the cabinet and looked awesome. He was so proud of himself, as was I. I went to use it later and couldn't open the door. It also blocked the exhaust in the front. He had to come back and reinstall it by tacking 2x4s (actually measured 1.5x3.5) to the back wall and then installing it. Now it all works beautifully, while taking a slight hit in the aesthetics. Another benefit to mounting the OTR model OTC is that the underside is heat and moisture resistant. So my coffee maker has a permanent home under there where I don't have to worry about the steam damaging the undersides of the cabinet. Oh, and the built in light of the OTR serves as task lighting for the area underneath. So I also saved money on lighting there. This post was edited by jscout on Mon, Jan 28, 13 at 13:26

Thanks, pillog. The dimensions and storage suggestions are extremely helpful. As for the 27" vs. 30", I'd love to have a 30" but the problem is how to fit one in. I'm working around various obstacles (e.g., a chimney) and fixed features (e.g., unmovable doors and some unmovable walls) that limit what we can do with the space. On the other hand, I hadn't thought about what would happen if the 27" ovens die and replacements can't be found. The current ovens are decades old and still work fine, but I guess that's not likely to repeat itself, given the life expectancy of current appliances. It may be time to look at those plans again and see if there's a way to steal 3 inches...

The received advice on the Advantium drawer was to make it as convenient as possible, though it probably is less important with the separate microwave. The glass tray for microwaving should not be stored high, and it does better flat than vertical, but since I'm pretty sure it's only for microwaving, you could put it in a less accessible place. Make sure you measure the trays. I think mine are 16" in diameter. They're definitely wider than my cookie sheets. Re flush integration, it's not that it's not functional when done that way. It's that it's really annoying. Because, definitionally, the door is stopped at 90°, or maybe as much as 100° if there's a big enough gap. If you're used to Euro cabinets that have that kind of limitation in the hinge, and are used to it, it might not bother you. I paid up big time to have step hinges so my cabinet doors would open fully. I don't often open my oven door (Gaggenau, side opening) more than about 135°, but when there's a big, heavy roaster or something, where one wants the strength of rigid bent elbows, it's a breeze with the door out of the way. Rolling racks were invented to rectify some of the looks issues that come with drop doors that cover the whole oven, or side doors that don't open the whole way, but there's nothing more convenient than just being able to reach into the oven and lift out your pot. Having one oven flush and the other proud, in a stack, will look weird. Different handles, colors of stainless and control panels, especially when there's at least an inch of trim between, looks fine. Different ovens of different sizes and different functions. But one innie and one outie will push it over the top, in my opinion. You might want to post another thread for info about the Bosch. Does the broiling element get used during speed cook? It may only have 9 pre-sets, but I can't imagine that it'll only do nine combinations. With the Advantium, if it's at all like mine, there are a handful of presets, but you can customize them, and you can also input your own. There's a steep learning curve, so modifying is worthwhile. Find something that sounds similar to what you want to do and change the time, or the amount of convection heat or whatever, and keep experimenting until you get just what you want.

GE Pofile line has the 240v Advantium (GE Profile Advantium Series PSB9240) and the matching single wall oven (GE Profile PT7050) Both ovens can be seen on the this link: GE Profile 240 Advantium and Profile wall oven I would not buy the combo unit. It's much easier to deal with any possible issues of a single appliance than when it's in a combo unit. In a combo if one fails you might have to replace the whole combo unit rather than just the one appliance. I have an Advantium Profile and separate Profile wall oven but to save money I bought the 120v Advantium. Since I have never used the 240 I can't compare so I have to say the 120 works fine for me. Others on this forum think the 240 is the way to go. My Profile Advantium and Profile wall oven are just over 5 years old. I've had no problems with either. They changed the style of the Profile right after I bought mine but here's what my mine up look like.