Double Glazed UPVC RunThru Sash Horn Windows

Top hung windows with RunThru horns provide an elegant alternative to traditional vertical sliding windows. Instead of being an added feature, the horn is integrated into the profile by milling it into shape, offering a seamless look. The exposed end is capped with a matching color for a polished finish.

While this is the slimmest and most cost-effective option, it does not comply with Part B of Building Regulations for emergency escapes, so other options, such as a tilt and turn design or dummy sash, should be considered.

This window is specially designed for homeowners who need a top opener over a fixed pane with RunThru horns, while adhering to Part B of Building Regulations. To achieve this, a full Tilt & Turn sash is paired with a fixed dummy sash featuring RunThru horns.

This design provides ventilation in regular use and ensures a fully openable window for emergency escape, offering both convenience and safety when needed.

The RunThru Horn over Tilt and Turn window consists of an upper and lower sash. The upper sash is a top-hung casement, offering easy ventilation and the ability to lock in a night-vent position for security. The lower sash features a tilt-and-turn design, which can tilt inward for ventilation or fully open for cleaning.

Depending on the window’s size and position, the lower sash also serves as an emergency escape, meeting Part B of Building Regulations.