View 2 of 4pk of 3.25 in. x 10 in. x 3 ft. Half Section Rectangular Stack Duct

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View 1 of 4pk of 3.25 in. x 10 in. x 3 ft. Half Section Rectangular Stack Duct View 2 of 4pk of 3.25 in. x 10 in. x 3 ft. Half Section Rectangular Stack Duct