L series aluminium exchangers with AC,DC fans or hydraulic presetting made for low-medium power and flow Single Pass • IBS - L - 010 • IBS - L - 015 • IBS - L - 020 • IBS - L - 024 • IBS - L - 030 • IBS - L - 040 • IBS - L - 050 Two Pass - 2P • IBS - L - 015 - 2P • IBS - L - 020 - 2P • IBS - L - 024 - 2P • IBS - L - 030 - 2P • IBS - L - 040 - 2P Double Core - DB • IBS - L - 024 - DB • IBS - L - 030 - DB • IBS - L - 040 - DB