You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications.
How to build a box for attic fan vent.
Cut off the end of the power cord using the blade of a utility knife.
Gable roofs and fans.
Make sure it is only just large enough to fit the vent.
Step 1 prepare the attic.
Slit 3 inches in on.
Put some glue on the ends of the remaining 22 1 2 inch pieces and secure them between the 28 3 4 inch pieces with box nails.
Gable roofs are those that consist of two straight sloping surfaces meeting at the apex of the roof.
If you attic is just a crawl space however your options are limited to vents and fans.
Remove the screws surrounding the grille on the fan using a phillips screwdriver.
To save time use an existing roof or gable vent to install your new attic fan.
Turn the fan over.
Take your saw and make the hole where the fan will go.
Make sure that the electricity to the attic is turned off.
This way you don t have to cut a brand new hole but simply make the hole for the vent larger so it can accommodate the fan.
Set the table saw fence on 5 inches.
Examples include ridge vents box and dome vents soffit vents and gable vents.
Turn the wheel on the table saw that adjusts the angle on the blade until you get a 45 degree angle.
Decide where you want the gable vent fan to go and mark out the area using a pencil or piece of chalk.