Avalon Firestyles 864 See-Thru GS2 Installation - Manual (Page 41)

Installation
(for qualified installers only)
41
© Travis Industries 4141208 100-01404
Mantel Requirements
Combustible Mantels
 Use the table below to determine the maximum mantel depth allowed. The mantel depth (measured from the
face of the fireplace) must fall in the shaded portion of the table.
 Any material that protrudes more than 3/4” (19mm) from the non-combustible facing is considered a mantel
and must meet the mantel requirements.
Examples:
- If you wish to have an 8” (203mm) deep mantel, it must be at least 6-3/4” (171mm) above the fireplace face (44-3/4”, 1137mm above the base).
- If you wish to have a mantel 8” (203mm) above the fireplace face, it must be no deeper than 9” (229mm).
Non-Combustible Mantels
Non-combustible mantels must meet the clearances listed for combustible mantels. However, if you do wish to
reduce the clearances by using a non-combustible mantel, the following requirements must be met:
 Non-combustible
mantel
and facing must extend
from the top of the
appliance to the top
surface of the mantel.
 A
non-combustible
header must be used
(metal stud).
36-3/4"
933mm
a
b
Maximum Mantel Depth (b)
Mantel
Height
Above
Face (a)
0”
(25mm) 1"
(51mm) 2"
(203mm) 8"
(178mm) 7"
(152mm) 6"
(127mm) 5"
(102mm) 4"
(76mm) 3"
(229mm) 9"
0”
(254mm) 10"
(279mm) 11"
(305mm) 12"
(330mm) 13"
(356mm) 14"
(381mm) 15"
(406mm) 16"
(432mm) 17"
(457mm) 18+"
Base of the Fireplace
Combustible mantel columns (legs) that protrude
more than 3/4" (20mm) from the glass frame
must meet the sidewall clearance (1" (25mm)
from fireplace, 3-1/4" (83mm) from the glass
frame). If they protrude 3/4" (20mm) or less, they
must meet the facing clearance 2-1/4" (57mm)
from the glass frame.
Non-combustible mantel columns do not have a
minimum clearance.
Combustible Mantel
1" (25mm) 2" (51mm) 8" (203mm) 7" (178mm) 6" (152mm) 5" (127mm) 4" (102mm) 3" (76mm) 9" (229mm) 10" (254mm) 11" (279mm) 12" (305mm)
SIDE OF FIREPLACE
Drywall
Non-Combustible Mantel
Non-Combustible Framing (metal studs)
must be used for the header.
Non-Combustible Facing