I have an old fan with 3 inch duct. This unit has the same dimensions so I like the size, but will a 4 inch to 3 inch reducer work & connect directly
469738
My husband did the installation and he did need an reducer/adapter. He can't recall the size, but the guy at hardware store was able to find the correct one as he took new one with him. Seem like the smaller one is the standard size, as we have answered this question from other customers. Good Luck! We like ours, nice and quiet.
469739
A 4" to 3" is not included with the fan, I bought the reducer separate at Home Depot as part of a dryer vent kit for $13. I was able to use the reducer and it came with an angled piece I needed, so it wasn't a waste of money for me. I believe you can find a reducer in the ABS black plastic if you just need the reducer. I sealed mine with the shiny silver duct seam tape.
571472
It is a 6" opening on each end but you should be able to find a reducer to fit 6" to 4".
156494
its been a few months since i did my install but if you read all the specs of the fan you should be able to determine id its going to fit. i luv my replacement fan. it makes much less noise and is more powerful in getting rid waste smell.
339252
If you are mounting on the ceiling to replace old fan you'll need to make sure the existing cut out is large enough to fit the new unit. I had enlarge the existing hole to make it fit. Mounting bracket is not too difficult to install; however, make sure you duct work is 4" or you'll need to buy a 3" to 4" duct convertor.Good luck
639367
It is made for a 6" - however your HVAC contractor can build a transition to make it suitable for a 4" duct, which is what we did and it works well.
194329
The ouptut duct for this model is 4" in diameter. If you are replacing an existing exhaust fan, you will probably have a 3" plastic flex duct vented directly into your attic which is not code compliant. Correct way is to replace the 3" plastic duct with a 4" insulated duct and vent to the outside directly. If you use the existing 3" duct, you will have to purchase a 4" to 3" adaptor. Hope this helps. AMGContracting
1607243
The unit id's house based at all three ports. I used a standard six 1/4" splitter, on a short hose, to run my drop system with no issues.No reducer needed.
1691750
These pumps usually have 3/4 pipe fittings. Don't see why you couldn't use a reducer. We circulate water from a wood burning furnace,constant even temp. Hope this helps, good luck
2122168
It would be very difficult because this fan is over 8" diameter. Why would you want to use such a large fan in a small duct? If you are determined, I'm sure you could make an adapter to custom fit it in line, however, a computer fan might be more compatible in this application.
577337
Good fan. I've got it hooked up to a 4" exhaust tube. I think 5" will work as well, but not 6".
1236561
Jonathan,The Rheem User Manual that I found on line did not specify the connection size. If it is a 3/4" NPT, this rod will fit. Personally, I don't of any water heaters that don't use a 3/4" female connection - so you are most likely fine. Safest way would be to remove your current one and verify size before ordering.Hope this helps.Dave
1707996
No. There is a 3-1/2" dia. hub that projects about 3/8" beyond the back face of the vent. The 3" dia. pipe slips inside the hub to make the connection. A 3-1/2" hole through the wall sheeting or through the entire wall will make the vent connection work. Good luck.
225059
Only 1/4", you can get reducers to go from one size to another. However if you are looking at the kind of flow needed for a half inch line, you will need a lot larger pump.
1532771
Sorry it has taken me so long to respond. I bought my fan several months ago but it didn't completely fail until a few days ago at which time i did the replacement job. I took a photo of my installation and can email it to whoever needs it. The fan housing is designed to accept either a 4 inch or 5 inch inside diameter rubber coupling on either inlet or outlet. I have a 4 inch ID coupling.
643747
I would think so, as it may just be pushing a little more CFMs. This unit has a light, plus a nite light, fan and heater. It uses a 6 inch duct, but you can use it with 4 inch, but it might not be quite as quiet. I replaced an onlder, round nutone with the same features. I had to modify the ceiling hole, but you may not have to do that. Check the spec sheet to compare with your old one, and if you have any questions Broan customer service will help. BTW, this fan is so much more quiet than our old one!
1607248
The unit id's house based at all three ports. I used a standard six 1/4" splitter, on a short hose, to run my drop system with no issues. No reducer needed.
1318232
yes.....you just need to pipe fit the reducers to what ever size you need. you can go up or down by using the rifgt pipe fittings. i think this is a 2" intake and 1.5" discharge. you will lose some pressure going up and gain pressure going down. i am pleased with the pump and also lost the previous pump to freezing. good luck.