DuraVent 4"x6.625" DirectVent Pro Adjustable Pipe w41.125 These rocks are often used

These rocks are often used as a flame diffuser or accent design for your fireplace or fire pit

and Metallic Concrete Shape: Round Round Material: Glass Fiber Reinforced Concrete(GFRC) Glass Fiber Reinforced Concrete(GFRC) Overall Dimensions: 27"W x 27"D x 10"H 33"W x 33"D x 11"H Country of Origin: USA USA

Vent Enclosure

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DuraVent 4"x6.625" DirectVent Pro Adjustable Pipe w41.125 These rocks are often usedOverview DuraVent is the premier company in the venting industry. With a broad range of engineered venting products, DuraVent has earned its reputation as the industry leader by offering innovative, safe, and professional products for the HVAC and Hearth markets. DuraVent's direct vent is specified by nearly every major stove and fireplace manufacturer in the U. S. and Canada, with the largest choice of termination caps for direct vent available.