Part Number: 130-550068-3 (Bracket-duct support)Part Number: 130-550068-5 (Bracket-duct support)Part Number: 130-550068-7 (Bracket-duct support)Part Number: 3963253-503 (Bracket-duct support)Part Number: 3963253-504 (Bracket-duct support)Part Number: 3963253-505 (Bracket-duct support)Part Number: 3963253-506 (Bracket-duct support)