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.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.