These products challenge the traditional distinction between windows and doors by providing flexibility of entrance and egress while also making a case for visibility and natural light. From operable ...

Double-hung windows are slightly more expensive, easier to clean and ventilate, and less energy-efficient. Single-hung windows have only one operable sash, which is the framed glass panel that moves ...

In a glassy corner office at 520 Fifth with views of Grand Central and the Empire State Building, I watched as the developer Ian Michael Klein performed a magic trick: Reaching a hand toward the frame ...

Standard window types include double-hung, casement, and picture windows, each with distinct pros and cons. Premium and specialty windows like bay, bow, or skylights can add architectural interest but ...