Napoleon B42NTRE Manuel D'installation Et D'utilisation page 29

rough framing
EN
MAXIMUM REAR VENT CLEARANCES (EXAMPLE 2)
REAR EXIT ENCLOSURE
The appliance requires a minimum enclosure height of 41 5/8" (105.7cm). For temperature requirements, the
enclosure space around and above the appliance must be left unobstructed.
* See "venting" section.
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W415-2367 / B / 12.09.20