Double-Hung Windows

Double-hung windows have two or more sashes that slide vertically. Double-hung windows allow for both sashes to slide in separate tracks, while the single-sliding option only allows for one sash to slide while the other remains fixed. An advantage to slider windows is their ability to adjust ventilation from being totally open (50% max) to reducing air flow to a small opening. The sashes of a double-hung window remain held in place through the use of counterweights, friction, or pretensioned springs. Variations on the sliding window are: double or single tracks, screens on the interior or exterior unit, and the possibility of a pivoting hinge on the sash.


*Under Development*


Ventilation: 50% max
Sashes: Two vertical
Operation: Slides along tracks
Variations: Double, single, screen, counterweights, pivot capable



Drawings include:
Double-Hung Window front elevation, axon

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Window operation is one of the most crucial choices to consider when selecting a window sash. Offering a variety of styles and functions applicable to specific conditions, a range of window operations should be considered to meet your needs for ventilation, operability, screening, and daylighting.

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