The Free Series The Free product range is a completely re-developed and independent range of fittings which has been designed as a modular system, and can therefore be used in an extremely flexible way. All of the most popular opening types are covered with the Free flap, Free fold, Free up and Free swing. The Free flap 1.7 and Free flap 3.15 stay flap fittings have established themselves on the market in an impressive way within an extremely short period of time. The entire product range is available since September 2014.