CHIMNEY INSTALLATION
Figure 15
Centerline of
Chimney
Firestop Spacer Installation at Attic Level
Figure 16
Ceiling Joist
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Header
Firestop Spacer Installation at Floor Levels
Inlet Air Pipe
Header
53D9041
Actual Center Point
Plumb Line
Plumb Bob
Imaginary Center
Point
FP1891
Inlet Air Pipe
Flue Pipe
Chimney Section
Flue Pipe
Firestop Spacer
Chimney Section
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Minimum Required Roof Opening
Minimum Framed Opening
Roof Pitch
0/12
1/12
2/12
3/12
4/12
5/12
6/12
7/12
8/12
9/12
10/12
11/12
12/12
Figure 17
Firestop Spacer
Floor
Joist
FP1892
B36LA & B36RA Woodburning Fireplaces
Table 1
"S" Series
"E" Series
Double Wall
Triple Wall Chimney
14¹⁄₂" x 14¹⁄₂"
14¹⁄₂" x 14⁵⁄₈"
17" x 17¹⁄₈"
14¹⁄₂" x 14³⁄₄"
17" x 17¹⁄₄"
14¹⁄₂" x 15"
17" x 17¹⁄₂"
14¹⁄₂" x 15¹⁄₄"
17" x 17³⁄₄"
14¹⁄₂" x 15³⁄₄"
17" x 18¹⁄₄"
14¹⁄₂" z 16¹⁄₄"
17" x 18³⁄₄"
14¹⁄₂" x 16⁷⁄₈"
17" x 19³⁄₈"
14¹⁄₂"x 17¹⁄₂"
14¹⁄₂" x 18¹⁄₈"
17" x 20⁵⁄₈"
14¹⁄₂" x 18⁷⁄₈"
17" x 21³⁄₈"
14¹⁄₂" x 19³⁄₄"
17" x 22¹⁄₄"
14¹⁄₂" x 20¹⁄₂"
Snap Lock Chimney
Support Securely to
Lower pipes Before
Fastening Support
Straps
FP1890
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17" x 17"
17" x 20"
17" x 23"
Outer Pipe
Flue
Support Straps
Fasten Securely
Firestop
Chimney Support
17