Ltpgtinterconnecting 4m pipe extension kit for kfr 63667075gwx1c air conditioning systems powered by toshibaltbr gtltbr gtthe copper pipes are supplied pre insulated with flare nut ends and inline connectors for easy installation to existing pipe workltbr gtltbr gtplease note that purchasing this extension pipe means you will need the gas in the air conditioner topped up this requires an engineer to visit we can provide details of a local engineer in most areas of