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Navien 30014367A Common Vent Collar Kit and Back Draft Damper $51.95 / ea. In Stock ✓. $51.95 ...
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Navien 30014367A Common Vent Collar Kit and Back Draft Damper · Navien 30022799A Common Vent Collar Kit and Back Draft Damper · Navien GXXX001893 18 inch ...
5.2 Navien Backflow Damper (Back-draft Damper). 53 ... The Navien Outdoor Vent Kit must be used ... The Navien Common Vent System* provides an easy way to install.
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Installing a Common Vent System. 66. 9.1 About the Common Vent System. 66. 9.2 Navien Backflow Damper (Back-draft Damper). 71. 9.3 Starting the Common Vent ...