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: Does this come with everything you need?  I am replacing another fan, but am not sure if 3" or 4" ducting was used.  I know it is louder with 3".
Document: The rest was simple. I'm not an electrician, but it took me 5 mins for the electricity, 10 mins to attache some new ducting (replace 3" with 4"), and a couple of hours to fit the fan.. Would have gone faster if I had not had to crawl in the attic from one side of the house to the other every time I needed to go up or down..I do not agree that the joist bracket is weak.
Just like another reviewer my fan rubs against the housing as well. Don't know how well it will work until I fix it but it was a good price.
everything seem to be included and not missing.no scratches and looks brand new(used)not installed yet so i hope all is well with this
I actually bought a returned fan for about what an entry level fan costs. This has about 1/3 the noise level of the entry level fans and moves just under 1 1/2 times the air flow. If you're noise sensitive, that's a big difference, but you can still hear it run in a quiet room, so you probably don't need to install a timer switch (pricey) to keep people from leaving it on all the time.
$33 for a 0.5 sone fan sounds like an excellent deal, since most other fans in that loudness category list for over $100. Well it isn't a deal. The Air King BFQ50 fan mounted in our bathroom sounded a lot close to the 40(?) year fan I was replacing, so I ran for a sound meter. At the ear level the loudness was 52-58 dB that translates to about 3 sones, about characteristic for other modestly priced fans.
I replaced a builder-grade unitBroan-NuTone 696N 50 CFM, 4.0 Sones. Fan 3" Ductwith this larger and much quieter one (the 50-cfm version) in a ceiling without back-side access. It was tricky, but doable.
Next, I cut out the new larger size opening. I replaced the first section of old 3" vent tube with a larger piece of 4" rigid vent. I then installed the bracket that the fan box clicks into. The fan is designed so it can vent either way parallel to the beam the bracket is mounted on.
This fan is very quiet and I'm very pleased with it.As far as mounting it, I installed it near the corner of a bathroom and mounted it to a 2 x 4 I attached to the wall. Then I had to measure the height so that it was just above a ceiling panel. Then I measured about three times to be sure the ceiling panel was cut correctly. Finally, the new ceiling was black, so I spray painted the plastic grille of this fan black.
The issue will be the outlet that attaches to the vent pipe. If you try to install from inside the bathroom you will need to be handy with repairing the sheet rock ceiling because there is no way to hook up the vent and rotate the fan body into the bracket unless you cut a larger opening.Installing this fan is easy if you have access to the attic or it is new construction. Wiring in straight forward.I gave it 4 stars because of the extra effort needed to install from the bathroom side.
Quiet, sufficient,and easy to install with access from above. Suggestions for venting would be a plus. The 4 inch vent tube I bought was a sloppy fit so I had to make another trip to the hardware store.
Answer: yes