Air gap around Boxed Seat Window finish frame

Hi. Recently I had two double hung windows replaced with a shallow box out picture window with a 14″ deep x 18″ tall seat under. The way they framed the… Hi. Recently I had two double hung windows replaced with a shallow box out picture window with a 14″ deep x 18″ tall seat under. The way they framed the…Read MoreGreenBuildingAdvisor