Mendota D30 Installation And Operating Instructions Manual page 52

Available Vent System Types
3 types of vent systems are available for this Insert model.
Colinear Vent System using 4" Exhaust Liner and 4" Air Intake Liner, Coaxial Vent System using 4" Exhaust Liner and 6" Air Intake
liner and a Natural Vent System (B-Vent System) using a single 4" Exhaust Liner. Select one Vent System based on the particular
application and chimney size.
Figure 4-14 COLINEAR VENT
Figure 4-16 NATURAL VENT (B-VENT)
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Figure 4-15 COAXIAL VENT
D30 DEEP TIMBER Page 52