Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VV81561604-10 found under Duct Adapter Kit Air Conditioner by Ver Val Enterprises Inc. The National Stock Number assigned to this part is 4130010653855, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like VV81561604-10.