Timberwolf TB42 Serie Manuel D'installation Et D'opération page 12

venting requirements
EN
16" (40.6cm)
minimum
40 ft (12m)
maximum
3 ft (1m)
minimum
20" (50.8cm)
maximum
24 1/8" (61.3cm)
24 1/8"
minimum plus
(61.3cm)
rise*
REAR VENT
* See "venting" section
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W415-2882 / A / 12.10.20