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Gas Fireplaces - Fireplaces that have either been converted from wood to gas or were constructed for gas. Most often their primary purpose is atmosphere rather than heat.

Gas Insert - A gas burning appliance that burns propane or natural gas to create flames. Gas inserts are installed into an existing fireplace and are generally vented up through the existing chimney.

Gas Log - A gas-burning appliance consisting of a gas burner made to resemble a log, used in a fireplace to simulate the effect of a burning log.