Bifold Door

Related terms

• Hinge (Door)

  The pivoting hardware carrying the door's weight; ball-bearing hinges are specified for heavy or high-use doors.

• Bow Window

  A curved projecting window of four or more equal units forming a gentle arc, a softer alternative to the angular bay.

• Bay Window

  A multi-panel window assembly that projects outward from the wall in an angled bay, adding light, view, and interior space.

• Casement Window

  A window hinged at the side that swings outward via a crank. Seals tightly when closed, giving strong energy performance and full-opening…

• Barn Door

  A surface-mounted sliding door on an exposed track, a design-driven space saver that does not seal or soundproof like a swing door.

• Casing

  The decorative trim framing a window or door opening on the interior or exterior, covering the gap between frame and wall.

• Balancer

  The spring or counterweight mechanism in a hung window that holds the sash open at any height. A common failure point in older windows.

• Clad Window

  A wood-interior window with an aluminum or vinyl exterior skin, combining a warm interior with a maintenance-free exterior.