Rehau has worked with Glazpart to supply the 4000 link vent to assist window installers and specifiers with complying with part F of the building regulations – which changed last June in advance of the 2025 Future Homes Standards.

Part F covers ventilation. The change saw effectively made trickle vents mandatory within replacement window frames in existing dwellings and specified frames in new builds.

In response, Rehau has incorporated Glazpart’s new trickle 4000 Equivalent Air Area (EQA) link vent into its existing range alongside the company’s bigger 5000 EQA and the smaller 2500 EQA Link Vents. Its compact size alongside the inclusion of fixing clips enables easier and faster installation into window frames and sashes. The 4000 link vent has the advantage of easily complying with habitable, kitchen and bathroom ventilation regulations (8000 EQA).