Thermally broken aluminium glazed-in flap ventilator suitable for PVC-U, timber or aluminium windows. The inner profile is punched to form an integral insect mesh. Superb wind and water tightness is achieved using a patented twin shutter design of a co-extruded flap and an extended outer profile.
This vent is available with a surface mounted upward air deflector (A) or with an internal water deflector (B).

The TwinAir Plus is available in 3 versions:

• Controllable: a graded operating mechanism provides control of the airflow
• Tricklevent: to comply with the building regulations, the airflow can be adjusted manually but the ventilator cannot be closed completely
• Permanent: to comply with the building regulations for fuel burning appliances all form of control mechanism has been restricted.

Performance	TwinAir Plus
mm extrusion	310	1000
Airflow at 1 Pa in dm3/s.m (cfr EN 13141-1)	3,9	12,8
Airflow at 2 Pa in m3/h.m (cfr EN 13141-1)	20,15	65
Equivalent Area in mm2/m (cfr EN 13141-1)	5000	16256
Free Air in mm2	5270	17000
Sound absorption Dne,w in dB(A) (cfr BS EN ISO 717-1)	32	27
Watertightness (cfr En 1027 & 2278)	Up to 600 Pa
Windproof	Up to 100 Pa
Heat conduction coefficient	U= 3,753 W/m2K, temperature factor (f) = 0,462
Rigidity and strenght	Highest class
Dimensions	Upper glazing	Transom glazing
Glass reduction	68 mm	/
Built-in height	79 mm	108 mm
Glazing thickness	20, 24 and 28 mm	20, 24 and 28 mm
Rebate size	17 mm	17 mm
Finishes
Control	Lever, rod or curved rod
Endcaps	Black or white
Finishes	F1 silver anodised All RAL colours (also twincolour)