Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How much clearance does this appliance require?
Document: I love this microwave/oven! This appliance really saves me time! I can bake fish, chicken, biscuits quickly and easily. I love that I don't have to pre-heat. This is so much better than turning on your big house oven. I can put frozen fish in the baking oven, put it on 400 degrees and its done in 20 minutes! YEAH!
The pizza portion doesn't take up much room and is a nice function.
Loving the fact that I can bake a pizza or warm up some soup at the office. It's nice that there is only 1 appliance on the counter instead of a microwave oven & a toaster over!
Don't even THINK about buying this microwave. At 6 weeks of using it, while operating the lower toaster oven tray, all of a sudden the upper microwave part of the appliance caught fire while nothing was in it. It was terrifying, and very dangerous. What's more, LG has been completely non-responsive. Terrible product, terrible customer service.
The drawer for the oven began sticking and now we can't even open the drawer. The manfacture LG will not do anything about it because its 13 months old. Paid a lot for this to have it last - we don't even use the conv. oven as much as the microwave-- not a good buy.
I was a little concerned as my old microwave was much larger than this one. I really bought this model because it had a pizza oven. I thought it would reduce my energy costs as no preheating is required. My pizzas come out perfect every time.
I have been using this appliance for a couple of months, and I am very pleased with it. I find myself using my large oven less often, in favor of using the small oven in this combination microwave/toaster oven. It is ideal for small pizzas, french fries, garlic toast, or a small batch of cookies.The appliance is made of mostly stainless steel, and has a high-end look that blends in well with my kitchen.
Purchased in mid-November to use in a new house I was building that was targeted for completion in mid-December. Due to construction delays we did not move into the house until mid-February. By the time I got the appliance out of the box I discovered the Pizza Oven did not work and it was too late to return. Very disappointed with the fact that there was only a 90 day return window. I could have purchased locally and not be stuck with an item that does not work!
When my Whirlpool corner countertop microwave died after only 18 months of use, I wanted the replacement to do more than just microwave since I was going to dedicate so much countertop real estate to it. I had often thought of getting a toaster oven, but never wanted to relinquish the space, so this seemed like a great combo. So far, it's been very good. We've only used the oven drawer for making french fries and heating leftover hoagies and pizza, but the results have been excellent.
Mine has exactly 1/2" clearance. I like that in my kitchen b/c it makes it look more custom.And finally--honestly, my old microwave didn't light up (the controls, I mean). I did have a clock, which this one has, that is lighted. The interior lights when you open the door. I love that there is no handle, which is NOT hard to open at all.
Answer: If you are talking about space around the unit itself, it only needs clearance horizontally on the left side (as you face the front of it).  That is because it vents on that side when you use the toaster drawer.  I would say it should have at least 8 inches, although tonight I noticed that I could feel hot air on the other side of the traditional toaster beside it, about 17 inches away.  Height-wise, you need 15.75 inches--that's the distance between my countertop and bottom of my top cabinets and I have less about a quarter-inch clearance between the top of the oven and the bottom of the cabinet.  Front to back, you need about 15 to 15.25 inches to fit the oven (I have it pulled away from the backsplash about 2 inches).  Oh, the actual width of the unit is 19.75 inches, but like I said, you really need minimum 27.75 or 28 inches IF you plan on using the toaster drawer very often (which I do!).  I need to be clear, our oven is sitting ("kitty-cornered") on a countertop in the corner of our open-kitchen bar so it really has clearance on both sides and back, although I think the most important clearance is that left-side vent.  Hope this helps!