Heatilator BIR42 Owner's Manual page 52

Inside
Diameter
11 in.
(279 mm)
21 in.
(533 mm)
Diameter
(330 mm)
SL1130 Offset/Return
Assembled
Diameter: 17 in./432 mm
Height: 24 in./610 mm
13 in.
(330 mm)
(51 mm)
JB577 Chimney Joint Band
13 in.
(330 mm)
CB576 Chimney Joint Band
Outside
13 in.
2 in.
A
B
17 in. (432 mm)
A
17 in.
15-1/4 in.
(387 mm)
29 in.
(737 mm)
15-1/4in.
(387 mm)
39-7/8 in.
(1013 mm)
B
25-1/4 in.
(641 mm)
28 in.
(711 mm)