The flashing provides a weather resistant means of sealing the chimney system where it passes through the roof flashings are either non ventilated or ventilated a ventilated flashing is required when the chimney is installed in an unventilated chase enclosure or is fully enclosed through the attic features. Residential wood stoves fireplaces and furnaces. Oil coal natural gas propane burning appliances. Natural drafting building heating appliances. Zero clearance factory built fireplaces. Double wall chimney system for residential and building heating appliances. ETL listed by Intertek to the HT requirements of UL 103. High temperature thin fiber ceramic insulation blanket maintains superior draft performance specifications. Size 9 x 28 x 14. Weight 57 lbs.
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