Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: What are wall clearances?  Thanks
Document: Thanks Amazon for carrying this great little heater- works great, looks nice, warms a 300 square foot room just fine (we also insulated the room very well-that helps). I love this heater- bought two more for our main house! Recommend highly! !
The Stiebel Eltron CK 15E 120V.1500-Watt Wall Fan Heater.
If you are looking for a heater to blast out heat from the moment you turn it on, this is it! Its clean looking on the wall and heats a small room quickly.
Very  quiet and heats our Casita travel trailer very well. Mounts on the wall out of the way.The best electric heater I have found for RVs.
My only complaint is that the AC power inlet is very near the top, where it (and the access hole in the wall) show. It should be nearer the midle. Otherwise, unit is attractive, quiet and efficient. Heat is almost instantaneous!
In my case, i replaced and existing wall heater unit that was cut into the wall, so we had to do a drywall patch to close the wall up before we installed the unit. Also the unit is fairly noisy. Because the heater pushes out so much heat so quickly the unit is not on for very long, which in my mind offsets the amount of noise it makes.
We first saw this little wall heater at a B&B in California back in December last year. It was mounted in the bath and did a great job of heating the whole room quickly and quietly. We now have one in our bath and are very satisfied with the quality and looks of the unit. European styling and German engineering - a hard combination to beat!
The unit itself does not look bad. However it does not sit flush with the wall. You will see the electrical that runs out near the top. So if you are concerned about aesthetics do not buy this unit. Also, and very frustrating, you have to remove the cover in order to wire it up. The unit does not come with wiring to ease wiring this unit to the power.I did not install this unit because it does not sit flush with the wall.
These heaters are well made, look good and are quiet. I prefer this type of heater to the common type that fits between the wall studs inside the wall.They are expensive (made in W Germany), but I have not had any problems with them, and used about about seven in various houses.For new construction I suggest connect the heater power to a wall switch.
This heater was perfect for replacing our 31 year old bathroom heater as we required dimensions that would cover the hole in the wall with surrounding antique tile. The Stiebel Eltron is very quiet and immediately produces a strong flow of warm air so one can bath without waiting to warm the room. Great product and attractive in it's white design.
Answer: no