By the 18th century, glass production had advanced, allowing for larger, more elaborate windows. Casement windows that opened into rooms became popular, and double hung windows were developed. The window openings became more recessed, with handy built-in pockets for embrasured shutters to slide into when open. Carpenters were given the opportunity to be creative and began designing shutter panels that were fashionable as well as functional. The shutters could be single or double hung, opening  partially or completely. Stylish, practical, and perfectly Parisian, letting the light in while keeping the nosy neighbors out! 

It was during Louis XV's reign that fanciful window curtains with beautiful trimmings and passementerie designed to match the bed curtains became en vogue. These drapes, laden with ribbons, cords, tassels, and bows, were in such demand that they began replacing interior shutters, and exterior shutters became commonplace. Homes were being built with thinner walls made of timber that was not as heavy as the thicker stone materials used in the 1700s, making it easier to reach out through the window to open and close the shutters. Early exterior shutters were either solid raised panels or louvered shutters called contravents or persiennes. Usually painted white, these exterior shutters led to the decline of the balcony since opening the shutters was too difficult with a balcony!