This offset box is designed to allow you to adjust the insert front and back inside the firebox. The top collar receives 6" flex liners with the Quick Connect System. The bottom collar fits inside the outlet on the insert.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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