Built-in valve for cavity wall, wall thickness up to 310 mm.
The valves are hinged at the bottom, the flap is straight.
For further information see Flange valve FF 1450V.
Never foam, use elastic grout or mortar
- Mounting dimensions: 670 x 290 mm
- Height: 270 mm
- Width: 650 mm
- Weight: 4.9 kg.