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6
Shrouds
WARNING! Risk of Fire!
as specified. Improper construction may overheat
chase top.
Shrouds may be field constructed where permitted by
regional building codes.
NOTICE:
Some regional codes require an agency-Listed
shroud. Consult your local building officials.
The shrouds must be constructed from minimum .018
in. (26 ga) thick aluminized steel.
Some shrouds require a radiation shield. Use where
specified.
A. Radiation Shield
Radiation shield must be constructed of minimum 26 ga
thick sheet metal.
Ø 17 1/2 in. (444.5 mm) Round Hole to fit over cap
Length x Width to fit inside shroud
Figure 6.1 Radiation Shield
B. Field Constructed Shrouds
The following field constructed shroud designs have
been tested for HHT fireplace systems and termination
caps.
Majestic Royalton Series • BE36/42 • 4044-197 Installation Manual • Rev J • 09/18
Shrouds must be constructed
3 in. (76 mm) tall legs
1. Open Top Shroud
TR342/344TV (top vent) caps do not require radiation
shield
14 1/2 in. (368 mm)
maximum height
3 in (76 mm)
minimum
Min. Opening
Base Dim.
TS345
in
23 x 23
mm
584 x 584
in
20 x 20
508 x 508
mm
in
17 x 17
mm
432 x 432
Figure 6.2
Open Top Shroud Dimensions
TR342/344 caps require radiation shield unless installed
partially above the shroud. The TR cap must be raised to
the minimum dimensions (or greater) above the shroud.
Refer to Figure 6.3.
(TR Series)
Maximum Height
14 1/2 in. (368 mm)
Shroud
Leg
Figure 6.3
Shroud & TR Series cap with no Radiation Shield
Min.
Top Dim.
Min.
Top Dim.
Min.
Width
Base Dim.
Min.
TR344
TR342B/TR344
TR342B
with TR-TVK
Min. Base Dims.
28 x 28
26 x 26
711 x 711
660 x 660
Radiation
Radiation Shield
Shield Not
Required
Required
Min. Top Dims.
25 x 25
23 x 23
635 x 635
584 x 584
Min. Opening Width
22 x 22
20 x 20
559 x 559
508 x 508
6" Min.
Above the
Shroud.
Storm
(SHROUD)
Collar
Shroud
Leg
Flue
3 in (76 mm)
air space from
bottom of shroud
Chase Top
to top of chase.
Radiation
Shield
Min. Opening
Width
25
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