Osburn STRATFORD II OB04007 Installation And Operation Manual page 34

8.5.3 Framing with forced air distribution kit
If a finishing material is installed inside the enclosure, its thickness must be added to the following
measurements.
D : Forced air duct
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E : Distance between framing and side fireplace standoff 18" (457 mm)
F : Framing width (Installation with centered fireplace) 72 ¾" (1848 mm)
8.5.4 Framing with corner installation
Framing configuration should be used as a reference only.
If a finishing material is installed inside the enclosure, its thickness must be added to the following
measurements.
Theses values are minimum measurements and may need to be increased to allow the installation
of the fresh air intake, the forced air distribution or the type of finishing material used.
Framing dimensions are for reference only. These measurements are recommended to prevent the ducts from being inside the standoff or have
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too tight duct curves. Smaller dimensions can be used depending on the size and type of duct as well as the configuration of the installation.
16 HVAC duct, as per ULC S110 or UL 181, class 0 or class 1, must withstand temperatures up to 250oF.
Page 34
E
D
(Duct can be installed on the left [recommended] or on the right).
14 3/8"
365mm
50 1/4"
1275mm
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F
14 3/8"
365mm
50 1/4"
1275mm
79 3/4"
2026mm
Installation and Operation Manual - Stratford II
E
D