HK DHA Products
Filters
Overlap
negative (open)
positive (closed)
Piston type
0 [PB/AT]-[ABPT]-[PA/BT]
1 [PB/AT]-[A/B/P/T]-[PA/BT]
1 [PB/AT]-[PA/BT]
3 [PB/AT]-[ABT/P]-[PA/BT]
4 [PA/BT]-[A/B/PT]-[PB/AT]
Type
4/2
4/3
