Opening light

Opening light

The portion of a sash or casement window that may be opened for ventilation rather than a dead light which is fixed.

opening light

In a window, the light (as a sash) that opens and closes, in contrast to a fixed light.
References in classic literature ?
We held, justly, as I think, that we had done more for his memory than anyone else, and we had done it by opening lights into his life.
Overall EFG Sailing Arabia - The Tour leaders Beijaflore marked up another win in the opening light winds race, finishing ahead of EFG Bank Monaco, the reigning champions and their main rivals for the title.
Instead everything--the shifting grid that jumps from 6 to 9 to 3 metres across each section, the four bay array of cladding (spandrel, clear view, light redirection and opening light), and even the shuttering of the concrete soffits--relates to clearly established rules, and is described very much as matters of fact.
The sets are terrific, from the spectacular opening light show, to the enchanting Shetland ponies and the costumes are glamorous in this seamless production.
Just off the hall lies an impressive triple aspect living room measuring 27ft x 12ft and boasting two bay windows with stained, leaded opening lights and a living flame gas fire with marble backing and stone surround.
Conversely, the atria breathe through a clutter-free single skin incorporating opening lights, which has a high performance solar control glass that does all of the work all of the time.
Replicas were then fabricated using SMW sections, which were polyester powder-coated, glazed with 6mm float glass, and fitted with top and side hung opening lights.
The internal skin is based on the Schuco Royal S75 profile and has aluminium-framed opening lights. The external skin is a mullion and transom construction with fixed glazed lights; pivoting glass slats are provided for air circulation.