Let me start by saying this fireplace has definitely met my expectations (which were very high), but I "stalked" it pretty much incessantly before ordering. The customer pictures on Amazon were HUGELY helpful so I will attempt to post some myself in the hopes it helps others.The reason for 4 stars? I felt it didn't deserve a full 5 stars because of a manufacturer defect, which thankfully did NOT prevent me from completely assembling it, but where there should have been a hole and threaded insert, there was only a hole. It was to install the fireplace box supports on the bottom in the middle. Because the 2 other holes were correct I didn't feel this would impact the design and function so I just "ignored" the middle hole. Of course this was pretty much the last piece to put together so if it HAD been integral to the design I'd have had to take the entire thing apart again.The other 2 reasons for a slight knock...I, like others before me that have reviewed, feel this unit should not be 72 degrees at the low end. I'd far prefer a setting of 65 at the low end, and I'd also prefer to see 1 degree increments rather than 3. I know it doesn't seem like it should be a big deal, but if this unit is working like other "space heater" type heaters, generally they don't turn OFF unless the room temperature is 2 degrees above the setting and they don't turn back ON unless the room is 1 degree lower than the setting. I've yet to turn mine on at the lowest temperature (72) with the doors closed and have it auto cycle off and on to maintain the room temperature. If I'm misunderstanding the correct functionality then someone PLEASE post in the comments but I couldn't find documentation that specifically stated how it should work. Additionally, I would really like to see an infrared electric insert option. Because of how slim-line this particular mantel is I seriously doubt any other insert would work with this mantel, other than the one that comes with it. From what I gather Real Flame has 3 inserts total that they use in their mantels. The 4099 which is their "regular" insert, the 4092 which is the "slim series" such as for this mantel and a few others they have labeled as slim, and then the "grand" insert (I don't have a model number for the insert) that works with the Kennedy (and other Grand series) mantels. The insert for the Grand series is infrared; I don't know if they offer an infrared version in the "regular" size.All in all it's a great piece, looks very nice, and while I have it in my bedroom for now the idea is to move it to the living room in the future. What I didn't realize when I bought this and want to caution others to think about, is if you have a large open space, you should consider infrared model inserts. This regular slim line model works great in my bedroom and I have no complaints about its ability to heat that room with the bedroom doors closed or cracked, but I think it's going to struggle to heat my living room/dining room/kitchen space which is all open with no ability to close off doors. Hence why I wish they had an infrared "slim" insert option.One other thing of note...others have mentioned that you should NOT tighten all the screws as you go, but rather loosely tighten so you can make slight adjustments as you add the pieces on. Going into assembly with this knowledge really saved me time and frustration as I did have to shift and move some things a bit to get them perfectly aligned, THEN go back and finish tightening. Also you don't need to use hulk-like strength to hand tighten this unit. It truly does only require "hand tightening" (no drills or anything crazy like that).I really like the unit and would most definitely buy again despite my complaints. It's perfect for us condo (or apartment) dwellers, or anyone else for that matter, that can't have a real wood-burning fireplace.Bonus: The cat likes it! And he's proof the unit doesn't get hot...no way he'd have his paws on it if it was.