Air-In® Overframe gap valves are Finnish supply air valves installed in the gap between the window and the wall. The Air-In Overframe gap valve consists of an Air-In frame valve and a lead-through housing.
The overframe gap valve is often a good option for renovations as it can be easily installed in the existing overframe gap. No structural changes are required. The required minimum installation height is 12 mm.
Air volume = K factor x √pressure
Product | Air volume l/s (pressure 20 Pa) |
Draught-free air volume | Noise reduction dB Dn,e,w+Ctr |
Opening size mm |
Air-In 400 dB TR 130 | 7 | 6 | 400x12 | |
Air-In 400 dB TR 170 | 7 | 6 | 49 | 400x12 |
Air-In 600 dB TR 130 | 8 | 7 | 600x12 | |
Air-In 600 dB TR 170 | 8 | 7 | 46 | 600x12 |
Air-In 400 dB TR 130 Super | 7 | 6 | 440x25 | |
Air-In 400 dB TR 170 Super | 7 | 6 | 51 | 440x25 |
Air-In 600 dB TR 130 Super | 8 | 7 | 640x25 | |
Air-In 600 dB TR 170 Super | 8 | 7 | 50 | 640x25 |
Frame depth 130 or 170 mm
Also available for other frame depths; please indicate in the order.