Installation Guide
8
EXISTING CONSTRUCTION ASSEMBLY INSTRUCTIONS
INSTALLATION FROM BELOW (NO ATTIC ACCESS)
1
Wood support screwed in from underneath. 
Screw is far enough away from the edge of 
ceiling board to prevent crumbling. 
Wood support 
1. Attach a piece of wood (not supplied; suggested size is 
1 in. x 3 in. x 14 in.) from below through the ceiling board 
using screws (not included). Position the screws far 
enough away from the edge of the ceiling board that it 
does not crumble and give way. Put screws in both ends 
of wood beyond the 10.25 in. hole. Keep screws in range 
of grille.
NOTE: No suspension brackets are needed for this 
method of installation.
2. Place the duct connector (F) through the ceiling cut out. 
Connect a 4 in. circular duct (2.1) (not supplied) and vent 
to the outside. Secure it with duct tape (not supplied) or 
clamp (not supplied) to make connection secure and air 
tight. 
Attach the duct connector (F) to the ceiling with one long 
wood screw (AA).
2
2.1
AA
F
3.5 in
.
Hardware Used
AA
Long wood screw
x 1
3. Remove fan junction box cover (3.1). Using quick 
connector, connect house wires to fan wires (3.2) as 
shown in wiring diagram on page 5. Wire connections as 
follows: black to live switch wire, white to neutral, green to 
ground. Reattach fan junction box cover (3.3).
3
House
wires
Product
wires
3.1
3.2
3.3
r
Quick
connector
4. Insert fan housing (A) into ceiling cut out, making sure to 
align the duct connector with the fan housing (A).
4
A
5. Secure the fan housing (A) from below using 2 long wood 
screws (AA) through the ange into the wood support 
and 2 long wood screws (AA) through the ange into 
the joist.
Turn on the power source. Check fan for any abnormal 
sound or vibration.
5
A
AA
Hardware Used
AA
Long wood screw
x 4










