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Guides A-Z

Guide describing how to install screening to keep birds, rodents, and other pests out of vent openings in new and existing homes.

Guide describing categories of direct-vent combustion space- and water-heating equipment and combustion safety testing.

Guide describing how to provide combustion air for fireplaces and how to test fireplaces for combustion safety.

Guide describing how to properly ventilate un-vented combustion appliances such as sealed fireplaces.