7 5in x 7 25in x 6in with 4in duct.
Bathroom exhaust fan no attic access.
Determine where the ceiling joists are and do not cut into the joists for any reason.
Another consideration to think about is the placement of your fan.
The biggest challenges of installing a bathroom fan without attic access will likely be connecting.
Ceiling fans vent either into the attic or outside through the roof.
If you have a bathroom with a separate enclosed toilet you ll also need an additional fan for that space.
The best way to proceed with a bathroom fan installation with no attic is to run the venting duct between the ceiling joists and through a nearby exterior wall.
Another option is to locate the fan hole between two ceiling joists.
Exhaust fans that filter the air and don t need a vent are available from amazon and the big box home improvement stores.
Is it easier that having attic access.
For quick reference a 50 square foot bathroom needs a 50 cfm fan.
Those individuals who are installing a bathroom exhaust fan without attic access will want to first measure the hole in the ceiling to make sure your new fan will fit in.
Installing a bathroom fan without attic access.
It can be done entirely from the room ceiling side no attic access needed installation.
Replacing a bathroom exhaust fan without attic access can be done correctly with minimal problems.
The optimal location for a bathroom fan is between the toilet and the shower.
If the hole is too small then you ll need to increase the dimensions.
Then using a masonry bit drill a single hole through the brick where the center of the duct will be for reference.
There are wall mount exhaust fans as well as ceiling exhaust fans.
If you have access to the outer wall cut a hole into the sheathing it can be bigger than the duct.
No cut housing with no attic access installation and replaces most small bathroom standard fans using existing opening.
Then just patch the access hole.
Video tutorial on how to replace your bathroom exhaust fan in 5 minutes or less.