condensation channel

condensation gutter, condensation channel, condensation groove, condensation trough

A trough-like depression in the top of the interior sill of a glazed opening, to receive and carry off moisture forming on the indoor face of the glass.

water channel, condensation channel

A trough-like depression in the top of the interior sill of a glazed opening to collect and drain away condensed moisture which forms on the interior face of the glass.
References in periodicals archive ?
"That condensation has nowhere to go, so it falls inside the building." New skylight technology can incorporate built-in condensation channels and ways of reducing the amount of moisture that forms.