Heatilator BIR50 Owner's Manual page 27

Elbow Strap
30° or 15°
Elbow
Elbow Strap
1 per
Section
Note:
Install supplementary
support if height exceeds
50 ft or if required by
fireplace manufacturer
Plumbers
Tape
Each supplementary
support holds up to
25 ft. of chimney
Maintain 2 in. clearance
from chimney to framing
Chase
Frame
Stabilizer