Materials of construction : 4.2 bar @ 23 ¡æ; 1.5 bar @ 85 ¡æ Flow rate & pressure drop, per 10-inch cartridge: 0.1 ¦ìm: ¡ý 18 l/min at 210 mbar 0.22 ¦ìm: ¡ý 25 l/min at 210 mbar 0.45 ¦ìm: ¡ý 27 l/min at 210 mbar 10inch: 24pcs/ctn (65x42x28cm) 20inch: 15pcs/ctn (65x42x28cm) 30inch: 15pcs/ctn (89x42x28cm)