Daylight air vent

At present poultry farms have to satisfy the standard daylight norm of 3% of the surface.

In a lightwall is usually placed an air vent made of polypropylen or betonplex. These vents do not let any light through. Sometimes it is necessary to make these vents transparent, so that the minimum of 3% still can be reached.

Tulderhof offers such a possibility. Instead of betonplex or polypropylen, we can use polycarbonate. The frame for the valve is of course made of another material.

Daylight outlet valve

Tulderhof also offers a daylight outlet valve, see right under.