R-6
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Flexible Air Duct Product #:10PF610" x 25', 12" WC Positive, 3/4" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:18PF618" x 25', 12" WC Positive, 1/2" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:4PF64" x 25', 12" WC Positive, 3/4" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:8PF68" x 25', 12" WC Positive, 3/4" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:6PF66" x 25', 12" WC Positive, 3/4" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:16PF616" x 25', 12" WC Positive, 1/2" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:14PFMHP614" x 25', 16" WC Positive, 1/2" WC Negative, 6000 FPM, R.6, Metalized Polyester Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:14PF614" x 25', 12" WC Positive, 1/2" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:7PF67" x 25', 12" WC Positive, 3/4" WC Negative, 5000 FPM, R6, Black Polyethylene Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn MoreFlexible Air Duct Product #:12PFMHP612" x 25', 16" WC Positive, 1" WC Negative, 6000 FPM, R.6, Metalized Polyester Jacket, Class 1, Insulated, Plain End, Flexible Air Duct Learn More