Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number A5774-5.25-19 found under Filter Element Air Conditioning by Wyle Laboratories Inc. The National Stock Number assigned to this part is 4130013783405, 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 A5774-5.25-19.