Owner Manual
5
Duct pieces 
To t a l
Equivalent number
length  x used   =
3- 1/ 4” x 10”
Rect.,
straight
1 Ft.  x (  )  =
Ft.   
8” Round,
straight
1 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect. 90
0
elbow
15 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect. 45
0
elbow
9 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect. 90
0
flat elbow
24 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect.
wall cap
with damper
30 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect. to
6” round
transition
5 Ft.  x (  )  =
Ft.   
3- 1/ 4” x 10”
Rect. to
6” round
transition
90
0 
elbow
20 Ft.  x (  )  =
Ft.   
6” Round,
90
0 
elbow
15 Ft.  x (  )  =
Ft.   
6” Round,
45
0 
elbow
9 Ft.  x (  )  =
Ft.   
Ft.   
7” Round,
straight
1 Ft.  x (  )  =
Ft.   
Subtotal column 1 =
Duct pieces 
To t a l
Equivalent number
length  x used   =
6”- 8” Round
wall cap
with damper
30 Ft.  x (  )  =
Ft.   
Round
wall cap
with damper
30 Ft.  x (  ) =
Ft.   
7” or 8” 
Round,
90
0 
elbow
15 Ft.  x (  )  =
Ft.   
7” or 8” 
7” or 8” 
Round,
45
0 
elbow
9 Ft.  x (  )  =
Ft.   
Ft.   
Ft.   
Ft.   
6”- 8” Round,
roof cap
30 Ft.  x (  )  =
Ft.   
7” or 8”
Round,
roof cap
30 Ft.  x (  ) =
Ft.   
Subtotal column 2 =
Subtotal column 1 =
Total ductwork  =
Longueur maximale du conduit d’aération :  Pour un 
mouvement d’air convenable, la longueur totale d’un conduit
d’aération ne devrait pas compter plus que l’équivalent 
de 100 pieds.
6” round to
3- 1/ 4” x 10”
rect. 
transition
1 Ft.  x (  )  =
Ft.   
6” round to
3- 1/ 4” x 10”
rect. 
transition
90
0 
elbow
16 Ft.  x (  )  =
Ft.   
7” round to
3 1/ 4” x 10”
rect. 
transition
8 Ft.  x (  )  =
Ft.   
7” round to
3- 1/ 4” x 10”
rect. 
transition
90
0 
elbow
23 Ft.  x (  )  =
Ft.   
Installation – Feuille de calcul pour le conduit d’aération










