Ventanilla (Philippine architecture)

In Philippine architecture, the ventanilla is a small window or opening below a larger window's casement, created—often reaching the level of the floor—to allow either additional air into a room during hot days or some air during hot nights when the main window's panes are drawn.

[4] The ventanilla is often used on upper floor windows, as in the bahay na bato.

As the lower part of a composite window, its larger upper part is typically a window with sliding capiz shell-paned panels.

The ventanilla is just under this upper large window's sill and is typically made with sliding panel-covers behind balusters or grills.

[5][3] Bobby Mañosa's traditional methods for his design of the Coconut Palace is considered as displaying a fine example of how ventanillas can be applied in modern Philippine architecture.