- Sashes move up and down in the master frame
- In single-hung units, the top glass is fixed only the bottom moves.
-Better models have tilt in sash feature that makes for easy cleaning
- uses a "balance" system to control sash movement and hold it stationary in the open position
- external screens
- scissor hinges on left or right depending on how you want the window to open.
- better models have multi-point locking systems and a single locking lever.
- Often a left hinged and a right hinged are mulled together into a single sturctural opening.
- Window opens 90 degrees to frame for full ventilation
- Screens installed on interior
Bow or Bay Window
-Better grade Bows and Bays have the windows installed into an actual buck frame rather than just vinyl or aluminum
- A Bay is three windows, a Bow can be four, five or six windows in combination to form radius projection to exterior.
-Should always be installed with proper supports tied into the building structure
- works like a casement but is side or top hinged.
- Sash opens to the exterior, projects out
-Screen is internal.
- Typically one or two moving sashes. which slide left or right to create ventalation.
- Pocket sliders usually have lift out sashes for easy cleaning. .
- Large non-opening glass area used for gathering exterior light or views
- often used in combination "mulling" to other operatiing window such as double hungs or casements