Free same business day shipping and lowest price guarantee on all IQAir GC MultiGas replacement cartridges, filters and sleeves.
GC Series Pre-Filter - F1 - Replace every 6 to 18 months.
Replacement prefilter element for IQAir GC Series Air Purifiers. HEPA-Type filter prolongs the life of the gas phase cartridges.
Gas Cartridges for GC MultiGas - F2 - Replace at least once every 2 years.
Set of 4 replacement gas cartridges for IQAir GC MultiGas Air Purifier.
Postfilter Sleeves for GC series - F3 - Replace at same time as Gas Cartridges.
Set of 4 replacement post-filter sleeves for IQAir GC Series Air Purifiers
Filters are sold individually.
More Information from IQAir [PDF]:
IQAir GC Multigas Cartridge Replacement Instructions
IQAir GC Prefilter Replacement Instructions