U.S. Army Technical Manual, COLLECTIVE PROTECTION EQUIPMENT, GUIDED MISSILE SYSTEM, PATRIOT CONSISTING OF ENTRANCE, PROTECTIVE, PRESSURIZED, COLLAPSIBLE, ... PATRIOT, M265, (NSN 4240-01-110-7617), 1982

U.S. Army Technical Manual, COLLECTIVE PROTECTION EQUIPMENT, GUIDED MISSILE SYSTEM, PATRIOT CONSISTING OF ENTRANCE, PROTECTIVE, PRESSURIZED, COLLAPSIBLE, MM, (NSN 4240-01-105-5521); FILTER UNIT, GAS-PARTICULATE, 400 CFM, 208 V, 400 Hz, M59, (NSN 4240-00-237-0223); AND INSTALLATION KIT, CBR, PROTECTIVE EQUIPMENT, PATRIOT, M265, (NSN 4240-01-110-7617), 1982

SCOPE.
a. Type of Manual: Organizational maintenance,
including the repair parts and special
tools list.
h. Model Numbers and Equipment Names:
Ml 4 protective entrance
Protective entrance control module
M59 gas-particulate filter unit
Housing unit
Airflow valve
Power distribution unit
Compartment control module
M285 installation kit
c. Purpose of Equipment. Provides filtered air
under positive pressure to field shelters.