A window that opens by sliding horizontally.
Force Field: Force Field Hinge Window Type
Double Sliding
A window that has two opening panels that slide horizontally.
Single Hung
One sash in the window frame is operable and moves up and down.
Double Hung
Both sashes in the window frame are operable and move up and down.
Louvre
Composed of parallel blades set in a frame, joined on a track so they tilt open and shut in unison.