The FlexAir EPC is a thermally broken flap ventilator, with an optional self regulation valve. It is available in three airflows with only one glass reduction and one built-in height.
The FlexAir is suitable for PVC-U, timber or aluminium windows.

The vent is easy to clean due to the removable inner profile, which also forms an insect mesh.

The FlexAir EPC has an optional self-regulating valve which functions automatically with changing air pressures to control the size of the ventilation gap and maintain consistent airflows.

Performance	FlexAir EPC
Airflow at 1 Pa in dm3/s.m (cfr EN 13141-1)	14	18	23
Airflow at 2 Pa in m3/h.m (cfr EN 13141-1)	20	25	32
Equivalent Area in mm2/m (cfr EN 13141-1)	29000
Free Area Performance in mm2/m (cfr EN 13141-1)	25000
Sound absorption in open position Dne,w in dB(A) (cfr BS EN ISO 717-1)	25
Air sound insulation RqA in dB(A) (cfr BS EN ISO 717-1)	- 3,5	- 2,4	- 1,8
Heat conduction coëfficient	U = 2,71 W/m2K, temperature factor (f) = 0,405
Windproof and watertightness (cfr EN 1027 & EN 2278)	Up to 650 Pa (150 m)
Rigidity and strength (cfr EN 3660)	Highest class
Dimensions	Upper glazing	Transom glazing
Glass reduction	65 mm	/
Built-in height	80 mm	105 mm
Glazing thickness	20 / 24 / 28 / 32 mm	20 / 24 / 28 mm
Rebate size	17 mm	17 mm
Finishes
Control	Lever, cord or rod
Endcaps	Black, grey, white or cream
Finishes	F1 silver anodised All RAL colour (also twincolour)