Part Number: 14A541-13 (Polyamide cover) Part Number: 14A541-15 (Duct straight) Part Number: 14A541-5 (Elbow) Part Number: 14A541-9 (Cover insulation) Part Number: 14A542 (Duct assy) Part Number: 14A542-11 (Weld assy) Part Number: 14A542-13 (Gusset) Part Number: 14A542-15 (Bracket) Part Number: 14A542-17 (Gusset) Part Number: 14A542-23 (Polyamide cover) Part Number: 14A542-25 (Duct) Part Number: 14A542-3 (Elbow) Part Number: 14A542-7 (Cover insulation) Part Number: 14A543 (Duct)