M44 Chemical-Biological Gas Mask Filter Canister/CQU-7/P Blower Assembly Hunter

Description

New unopened filter and CQU-7/P Blower Assy. NSN 4240-01-343-3443LS
It’s used with filter and mask to assist breathing. I know USAF pilots used to use them. Batteries are dead but not swollen. As is no returns please bid accordingly. Thanks