PRO/PAK PORTABLE FOAM INJECTION AND APPLICATION SYSTEM KK Products: Designed for Class A one- or three-percent AFFF or AFFF-AR applications. System has three different nozzles (low and medium expansion) and 2.5-gallon foam concentrate tank. 0.1- to one-percent Class A foam capability for forest and brush fires. Can be used for industrial or other small Class B hydrocarbon spills. (800) 537-7553.