Two vertical sashes that slide up and down to open and close. Both sashes tilt in.

Two horizontal sashes that slide side to side to open and close.

Three sections with the center section stationary and two end sections slide side to side to open and close.

One sash, hinged on the side, cranks out and away from home to open.

Two sashes, hinged on sides, cranks out and away from home to open.

Three sashes, the center section stationary and the two end sections crank out and away from home to open.

One sash, hinged at the top, cranks out and away from home to open

One sash, hinged at the bottom, tilts in from the top into interior of home.

One sash, does not open.

Three sashes, the center section stationary and the two end sections are either double hungs or casements.

Three, Four or Five Sections with stationary center units and casements on the ends.