Builder's Best 112423 4" x 8ft UL Transition-Duct Single-Elbow Kit

• UL 2158A;• Kit includes: ;• 1-piece UL flexible pipe ;• Close Elbow(R) ;• 1 crimped male fitting ;• 2 metal clamps ;• Bulk box;

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Builders Best(R) 111718 4 x 8ft UL Transition-Duct Single-Elbow Kit