Double hung windows can be screened from the exterior like storm windows. Storm windows have to be removed and the screen in put in place for the warmer months. Or you can get an expanding screen that is put in place when a sash is put up or down. There are many different reasons and situations to use certain types of screens so I try to offer a few options to best suit your needs. Screens are custom made to match all different openings and finished to match surrounding casing and Sash.