www.hartandcooley.com Sizing Guide 1
Page
Section 1 Type B Double-Wall Gas Vent Systems 3
General Rules 4
Types of Systems and Definitions 7
Single-Appliance Vents 8
Multiple-Appliance Vents 13
Multiple-Story Venting 19
Section 2 Factory-Built All-Fuel Chimney Systems 23
Table of Contents
