Suitable for both drinking and aquarium filtration systems. Best to use with 100-125GPD osmosis mebrane. Made by one of the most reputable company in the world AQUAFILTER. (An example of how we will send your parcel). For Highlands, Channel Islands and Northern Ireland.> AB31 to AB38 > AB40 to AB56 > IV1 to IV28 > IV30 to IV32 > IV36 to IV40 > IV41 to IV49 > IV51 to IV56 > IV63 > KW1 to KW17 > PA20 to PA38 > PA41 to PA49 > PA60 to PA78. > PH4 to PH44 > PH49 to PH50 > PO30 to PO41 > TR21 to TR26 > Channel Islands > Isle of Man > Isle of Wight > Northern Ireland (BT) > HS > ZE > JE > GY. This will be free of charge 24h or 48h service excluding Saturday-Sunday and Bank holidays (charges for above postcodes will be added automatically at the time of your check out). The item "Inline Flow Restrictor 550 1/4 Pushfit for Reverse Osmosis System Membrane" is in sale since Saturday, April 27, 2013. This item is in the category "Pet Supplies\Fish & Aquarium\Filters".ltd" and is located in purfleet, Essex. This item can be shipped to all countries in Europe, Australia, United States, Canada, Brazil, Japan, New Zealand, China, Israel, Hong Kong, Indonesia, Malaysia, Mexico, Singapore, South Korea, Taiwan, Thailand, Chile.