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35
3 in (76 mm)
minimum
Min.
Base Dim.
Min.
Base Dim.
Min.
Top Dim.
Min.
Top Dim.
Min. Opening
Width
Min. Opening
Width
3 in. (76 mm) tall legs
Ø 17 1/2 in. (444.5 mm) Round Hole to fit over cap
Length x Width to fit inside shroud
10
Shrouds
• Chase top shrouds may be eld constructed where
permitted by regional building codes.
WARNING! Risk of Fire! Shrouds must be constructed
as specied. Improper construction may overheat chase
top.
NOTICE: Some regional codes require an agency-Listed
shroud. Consult your local building ofcials.
• Hearth & Home Technologies Inc. supplies UL listed
shrouds. See your dealer for details.
• The following eld constructed shroud designs have
been tested for Hearth Technologies replace systems
and termination caps.
• The shrouds must be constructed from a minimum .018
in. (26 ga) thick aluminized steel.
• The wire mesh is optional but recommended and must
be .018 in. thick minimum, 1/2 in. mesh.
A. Radiation Shield
• Some shrouds require a radiation shield. Use where
specied.
• Radiation shield must be constructed of minimum 26 ga
sheet metal.
B. Field Constructed Shrouds
Figure 10.1 Radiation Shield
Figure 10.2 Open Top Shroud Dimensions
Heatilator • CL36D, CR36D • 12538 • Rev Z 7/12
TS345 TR342 TR342/344TV
Min. Base Dims.
in 23 x 23 28 x 28 26 x 26
mm 584 x 584 711 x 711 660 x 660
Radiation Shield
Required
Min. Top Dims.
in 20 x 20 25 x 25 23 x 23
mm 508 x 508 635 x 635 584 x 584
Min. Opening Width
in 17 x 17 22 x 22 20 x 20
mm 432 x 432 559 x 559 508 x 508
Open Top Shroud (TR342 caps require radiation shield)