Duct Terminator Common Features

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Duct Terminators can be supplied with different nominal size openings in the same unit. Here is a terminator designed to accept two 5″ ducts and one 2″ duct. If more than four openings abreast are required, use combinations of terminators with two, three, or four openings. These may be placed on the outer form jacket butted side by side to achieve any number of openings per tier.
1″ SEPARATION
DUCT A CH CV B
SIZE 2-WAY 3-WAY 4-WAY
2″ 7 3/8″ 10 13/16″ 14 1/4″ 3 7/16″ 3 7/16″ 4 3/16″
3″ 9 5/8″ 14 3/16″ 18 3/4″ 4 9/16″ 4 9/16″ 5 5/16″
4″ 11 5/8″ 17 3/16″ 22 3/4″ 5 9/16″ 5 9/16″ 6 5/16″
       
1 1/2″ SEPARATION
DUCT A CH CV B
SIZE 2-WAY 3-WAY 4-WAY
2″ 7 7/8″ 11 13/16″ 15 3/4″ 3 15/16″ 3 15/16″ 4 11/16″
3″ 10 1/8″ 15 3/16″ 20 1/4″ 5 1/16″ 5 1/16″ 5 13/16″
4″ 12 1/8″ 18 3/16″ 24 1/4″ 6 1/16″ 6 1/16″ 6 13/16″
5″ 14 1/4″ 21 3/8″ 28 1/2″ 7 1/8″ 7 1/8″ 7 7/8″
6″ 16 3/8″ 24 9/16″ 32 3/4″ 8 3/16″ 8 3/16″ 8 15/16″
       
2″ SEPARATION
DUCT A CH CV B
SIZE 2-WAY 3-WAY 4-WAY
2″ 9 1/8″ 13 11/16″ 18 1/4″ 4 9/16″ 4 9/16″ 5 5/16″
3″ 11 1/8″ 16 11/16″ 22 1/4″ 5 9/16″ 5 9/16″ 6 5/16″
4″ 13 1/8″ 19 11/16″ 26 1/4″ 6 9/16″ 6 9/16″ 7 5/16″
5″ 15 1/4″ 22 7/8″ 30 1/2″ 7 5/8″ 7 5/8″ 8 3/8″
6″ 17 1/4″ 25 7/8″ N/A 8 5/8″ 8 5/8″ 9 3/8″
       
3″ SEPARATION
DUCT A CH CV B
SIZE 2-WAY 3-WAY 4-WAY
2″ 11 1/8″ 16 11/16″ 22 1/4″ 5 9/16″ 5 9/16″ 6 5/16″
3″ 13 1/8″ 19 11/16″ 26 1/4″ 6 9/16″ 6 9/16″ 7 5/16″
4″ 15 1/4″ 22 7/8″ 30 1/2″ 7 5/8″ 7 5/8″ 8 3/8″
5″ 17 1/4″ 25 7/8″ N/A 8 5/8″ 8 5/8″ 9 3/8″
6″ 19 1/4″ 28 7/8″ N/A 9 5/8″ 9 5/8″ 10 3/8″

 

A TYPE OF SPACER T – Terminator Module (Interlocking)
B Nominal size of duct to be used
C  TYPE OF DUCT  A – Plastic duct; Iron pipe size    

T – Bell spec AT 8546, Plastic duct

 
D  Number of horizontal openings per Terminator Module     
      
E Nominal horizontal separations of Terminator openings in 1/10″    
      
F Nominal vertical separations of Terminator openings in 1/10″.     
G Wall Thickness

 

A B C D E F G
TYPE OF
TERMINATOR
NOMINAL
DUCT SIZE
TYPE OF
DUCT
DUCTS PER
TIER
HORIZONTAL
SEPARATION
VERTICAL
SEPARATION
WALL
THICKNESS
T 5 A 3 20 20 4

 

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